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Second-level domain

In the (DNS), a second-level domain (SLD) is the portion of a that appears immediately to the left of the (TLD), forming the primary label under which websites, email, and other services are hosted. For example, in the "whois.icann.org", "icann" serves as the second-level domain, while "org" is the and "whois" is a third-level subdomain. Second-level domains represent the foundational unit of ownership in the DNS hierarchy, enabling registrants—such as individuals, businesses, or organizations—to secure a within a chosen TLD for establishing an online presence. Registration of SLDs is overseen by TLD registry operators, who define policies on eligibility, renewal terms, and pricing, often through accredited registrars that facilitate the process for end users. Once registered, SLD owners gain authority to create and manage an unlimited number of subdomains at lower levels, supporting complex structures like departmental websites (e.g., "blog.example.com") or localized services (e.g., [email protected]). SLDs operate across all TLD categories, including generic TLDs (gTLDs) like .com and .org, which are globally available for broad use, and country-code TLDs (ccTLDs) like .us and .uk, where SLDs may incorporate geographic or functional subdivisions to align with national regulations. The system also accommodates internationalized domain names (IDNs) at the second level, allowing non-Latin scripts such as Arabic or Chinese characters to enhance global accessibility, subject to label generation rules established by ICANN to prevent conflicts. This structure ensures scalability and stability in the DNS, with over 378 million registered SLDs worldwide as of September 2025, underscoring their critical role in internet addressing.

Fundamentals

Definition and hierarchy

A second-level domain (SLD), also known as a second-level label, is the portion of a (FQDN) that immediately precedes the (TLD), serving as the primary identifier under a given TLD. For instance, in the FQDN "example.com", "example" constitutes the SLD. This label is typically alphanumeric, limited to 63 characters, and must be unique within its TLD to prevent naming conflicts. Within the Domain Name System (DNS), SLDs occupy a specific position in the hierarchical tree structure that organizes the global namespace, starting from the root zone at the apex. The hierarchy descends as follows: the root (represented by a null label or ".") delegates to TLDs (e.g., .com or .org), which in turn encompass SLDs as their immediate subdomains; SLDs may further delegate to third-level domains or hosts (e.g., www.example.com).[](https://www.rfc-editor.org/rfc/rfc1034.html) This structure enables distributed management, where the root zone file points to TLD name servers, and TLD operators maintain authoritative records for their SLDs. SLDs represent the primary registrable units in this namespace, as they are the level at which individuals or organizations typically acquire domain names for use. Key to this hierarchy is the concept of , where authority over portions of the is passed from higher to lower levels via () resource records, allowing TLD registries to manage and register SLDs independently. Registries, contracted by the Internet Corporation for Assigned Names and Numbers () for generic TLDs or by relevant authorities for country-code TLDs, operate the databases for SLD registrations under their TLD, ensuring availability, stability, and resolution through the DNS protocol. This model partitions the into , with each SLD potentially containing its own subdomains while remaining subordinate to the TLD . The hierarchical framework for SLDs originated in the foundational DNS specifications outlined in 1034 ("Domain Names - Concepts and Facilities") and 1035 ("Domain Names - Implementation and Specification"), published in November 1987 by the (IETF). These documents established the tree-like naming system to replace flat host tables, introducing SLDs as essential components for scalable, delegated administration of addresses.

Distinction from other domain levels

Second-level domains (SLDs) occupy a distinct position in the Domain Name System (DNS) hierarchy, immediately below top-level domains (TLDs) such as .com or .org. TLDs represent the highest level after the zone and are delegated by the (IANA), which maintains the root zone database and coordinates their operation through root name servers. In contrast, SLDs like "example" in example.com are not directly managed by IANA but are instead delegated to and administered by registry operators under the authority of the TLD, with responsibilities including registration processing, database maintenance, and DNS record provisioning. SLDs differ from third-level domains, which function as subdomains under the SLD and are typically created and controlled by the SLD registrant rather than the registry. For instance, in the domain www.example.com, "www" is a third-level domain (subdomain) pointing to specific services like a website's homepage, while "example" remains the core SLD as the primary registrable entity in most TLDs. This structure allows SLDs to serve as the foundational unit for domain ownership, with third-level domains added optionally for organizational purposes. A common misconception arises around "naked domains," which refer to the SLD combined with the TLD without any subdomain prefix, such as example.com, as opposed to extended forms like www.example.com that include subdomains or even full URLs with paths. In certain country code TLDs (ccTLDs), however, the SLD may function primarily as a structural category rather than a directly registrable unit; for example, under .uk, registrations often occur at the third level beneath predefined SLDs like "co.uk" for commercial entities, where "co" is a delegated second-level label managed by the registry but not available for independent registration. This setup can lead to confusion, as the effective registrable name appears as a third-level domain while adhering to the overall DNS hierarchy. An important edge case involves internationalized domain names (IDNs) registered at the second level, which support non-ASCII characters from various scripts to accommodate global languages. To maintain compatibility with the ASCII-restricted DNS protocol, these IDNs are encoded using Punycode, a bootstring-based transformation that converts Unicode strings into ASCII equivalents prefixed with "xn--", such as a hypothetical non-Latin SLD appearing as xn--example.com in the registry. This encoding ensures seamless resolution while preserving the SLD's role as the key registrable component under the TLD.

Applications in top-level domains

In generic top-level domains

Generic top-level domains (gTLDs) are categorized into unsponsored and sponsored types, where second-level domains (SLDs) are registered directly beneath the gTLD. Unsponsored gTLDs, such as .com and .net, operate for the general benefit of all Internet users without specific community restrictions, allowing broad registration of SLDs by individuals or organizations. Sponsored gTLDs, like .edu and .gov, are tied to particular communities—educational institutions and U.S. government entities, respectively—and while SLDs are also registered directly, eligibility criteria apply to ensure alignment with the sponsor's mission. Registration of SLDs in gTLDs is handled exclusively by ICANN-accredited registrars, who interface with registry operators to facilitate the process. To register, applicants search for availability using WHOIS or RDAP protocols, which query public databases to confirm if the desired SLD is unregistered. Valid SLDs must consist of 1 to 63 characters, using only letters (a-z), digits (0-9), and hyphens (-), with no hyphens at the start or end, and must begin with a letter or digit per the syntax rules outlined in RFC 1035. Registrants provide contact details, including name, address, email, and phone, which are stored in WHOIS records unless protected by privacy services. Prominent examples include "google" in google.com, a classic unsponsored gTLD SLD used for commercial purposes, and "harvard" in harvard.edu, illustrating a sponsored gTLD restricted to accredited U.S. higher education institutions. As of the third quarter of 2025, .com alone hosts 159.4 million SLD registrations, underscoring its dominance in the gTLD ecosystem and the massive scale of global domain usage. The landscape of gTLD SLDs expanded significantly following ICANN's 2012 New gTLD Program, which opened applications for new extensions and resulted in over 1,200 delegations by 2023, including community-specific ones like .app (for mobile applications) and .blog (for publishing platforms). This initiative has diversified SLD options, enabling more targeted branding while maintaining the direct registration model under each gTLD.

In country code top-level domains

Country code top-level domains (ccTLDs) are two-letter top-level domains designated for countries, territories, or other geographic entities based on the ISO 3166-1 alpha-2 standard, such as .uk for the United Kingdom and .au for Australia. These domains are delegated and overseen by the Internet Assigned Numbers Authority (IANA), which maintains the root zone database and coordinates with national or regional registries responsible for their operation. As of 2025, there are over 300 active ccTLDs, representing a diverse global ecosystem managed independently by local authorities to reflect national policies and user needs. In ccTLDs, second-level domains (SLDs) frequently serve as a required layer for domain registrations, creating structured sub-namespaces that categorize users by purpose or sector, such as commercial, organizational, or governmental uses—for instance, .com.au for businesses or .co.uk for companies. This approach contrasts with many generic top-level domains (gTLDs), where direct SLD registrations under the TLD are more common without such mandatory categorization. The primary purpose of these SLDs is to organize the namespace efficiently, enabling targeted policies for different user groups like academia or non-profits, which enhances local relevance and administrative control. The implementation of SLDs in ccTLDs offers several advantages, including strengthened local governance through registry-specific rules that align with national regulations and cultural contexts. This structure facilitates spam and abuse mitigation by imposing eligibility checks and restrictions at the SLD level, resulting in lower phishing and malicious registration rates compared to unrestricted namespaces. Additionally, SLDs support internationalized domain names (IDNs) in ccTLDs, allowing registrations in native scripts to better serve non-Latin language communities, as seen with the .рф IDN ccTLD for Russia. Overall, these features promote a more tailored and secure domain ecosystem under IANA's coordination.

Country code second-level domains

Africa

In African country code top-level domains (ccTLDs), second-level domains (SLDs) are commonly structured to categorize registrations by purpose, such as commercial, organizational, governmental, or academic activities, reflecting a regional emphasis on localized digital identity amid growing internet adoption. This approach facilitates easier management and relevance for users, with many registries adopting patterns like .com.[ccTLD] or .co.[ccTLD] for commercial entities to mirror global conventions while promoting economic sectors. As of late 2023, registrations under African ccTLDs totaled over 4.33 million, underscoring the continent's expanding online presence, though growth varies by country due to infrastructure and policy differences. Projections indicate continued expansion at an average annual growth rate of 12.4%, potentially exceeding 5 million by late 2025. A prominent example is Algeria's .dz ccTLD, managed by the National Center (NIC.DZ), which offers SLDs including .com.dz for entities, .org.dz for organizations, and .gov.dz for bodies, alongside others like .asso.dz for associations and .net.dz for network providers. These SLDs require local presence or , supporting Algeria's on national . Nigeria's .ng ccTLD, overseen by the Nigeria Registration (NiRA) since its establishment in 2009, features SLDs such as .com.ng for use, .org.ng for organizations, and .gov.ng for entities. Direct registration at the second level (e.g., example.ng) became available starting in 2013, enhancing accessibility, with active .ng domains reaching over 111,000 by mid-2018 and growing to approximately 229,000 by April 2025. South Africa's .za ccTLD, regulated by the .ZA Domain Name Authority (ZADNA), maintains an extensive SLD framework, including .co.za for commercial purposes, .org.za for non-profits, .gov.za for government, and .ac.za for academic institutions. This structure has driven high adoption, with .za registrations exceeding 1.3 million as of 2025, making it the dominant African ccTLD and exemplifying mature liberalization policies. Other African ccTLDs follow similar patterns, such as Zambia's .zm, administered by the Zambia Information and Communications Technology Authority (ZICTA), which includes .co.zm and .com.zm for commercial entities, alongside .biz.zm for businesses and .ac.zm for academics. Trends toward liberalization are evident in countries like Kenya's .ke ccTLD, managed by the Kenya Network Information Centre (KeNIC), where .co.ke supports commercial registrations and has seen increased promotion in the 2020s to boost local business online visibility, contributing to over 111,000 total .ke domains as of June 2025. Overall, these SLD implementations in African ccTLDs prioritize commercial growth through dedicated namespaces like .com.[ccTLD], aligning with broader continental efforts to enhance digital economies, though challenges like varying regulatory maturity persist.

Asia

In , second-level domains (SLDs) under country code top-level domains (ccTLDs) exhibit diverse structures tailored to national needs, often incorporating sector-specific categories to support economic and administrative functions in rapidly digitizing economies. India's .in ccTLD, managed by the (NIXI), features prominent SLDs including .co.in for commercial purposes, .org.in for non-profit organizations, and .gov.in for government entities, with .nic.in reserved for the National Informatics Centre's registry operations. By 2025, the .in registry has surpassed 4 million domain registrations, reflecting India's booming digital sector. Japan's .jp ccTLD, administered by Registry Services (JPRS) since its establishment in , enforces strict eligibility requiring a permanent Japanese address for registrations. Key SLDs include .co.jp for corporations, .or.jp for non-profits and associations, and .ac.jp for academic institutions, promoting organized allocation in one of Asia's most mature markets. South Korea's .kr ccTLD, overseen by the Korea Network Information Center (KRNIC), supports second-level registrations in both and characters via Internationalized Domain Names (IDNs). Common SLDs are .co.kr for businesses, .or.kr for organizations, and .go.kr for government bodies, enabling culturally resonant online identities amid high penetration. Other Asian countries similarly leverage SLDs for targeted use: Pakistan's .pk ccTLD, managed by PKNIC, includes .com.pk for commercial sites, facilitating e-commerce in a growing online economy. In Bangladesh, the .bd ccTLD under BTCL administration uses .com.bd for commercial registrations, with a 2025 expansion to direct second-level .bd domains to enhance flexibility. Thailand's .th ccTLD, governed by THNIC, employs .co.th for companies, requiring Thai entity status and aligning with policies for second-level registrations introduced in phases since 2014. Regionally, Asian ccTLDs show heavy reliance on sector-specific SLDs to categorize users, from to , which supports regulatory oversight and trust. This trend is amplified by expansion, where SLDs like .com.[ccTLD] gain popularity for local branding and in markets projected to drive Asia's digital economy growth to over $300 billion by 2025.

Europe

In European country code top-level domains (ccTLDs), second-level domains (SLDs) often serve to categorize registrations by purpose or sector, while direct second-level registrations under the ccTLD have become increasingly common to simplify access and align with broader goals. This structure supports multilingual Internationalized Domain Names (IDNs) for languages such as , , , and Cyrillic-based ones in , enabling native script usage under frameworks like the EU's regulation for . The European Union's (GDPR), effective since 2018, significantly influences SLD and direct registration processes by mandating privacy protections for registrant data, often resulting in redacted outputs and requiring consent-based data handling across ccTLD registries. In the 's . ccTLD, managed by Nominet, traditional SLDs include .co.uk for commercial entities, .org.uk for non-profits and organizations, and .gov.uk exclusively for government bodies and organizations. Direct registrations at the second level under .uk (e.g., example.uk) were introduced in June 2014, allowing broader access without mandatory SLDs and phasing out exclusive reliance on third-level options like .co.uk. France's .fr ccTLD, overseen by AFNIC, prioritizes direct second-level registrations (e.g., example.fr), a policy favored since March 2009 to streamline procedures and expand eligibility to EU residents. Prior to this simplification in the late 2000s and early 2010s, registrations were more restricted to third-level SLDs such as .com.fr for commercial use, but these have been de-emphasized in favor of the direct model to boost adoption. Germany's .de ccTLD, administered by , operates primarily through direct second-level registrations (e.g., example.de) with no mandatory SLDs, making it one of Europe's most straightforward systems since its inception. While subdomains (third-level, e.g., sub.example.de) are commonly used for organizational purposes, the absence of required SLDs supports flexible, direct access open to global registrants since local presence rules were relaxed in 2018. Other notable examples include 's .es ccTLD, managed by the Network Information Centre of Spain (NIC.es), where SLDs like .com.es are designated for commercial activities alongside direct .es registrations. In , the .ru ccTLD under the Coordination Center for TLD .RU/.РФ supports both direct second-level registrations and legacy third-level SLDs such as .com.ru for commercial purposes, with a policy shift encouraging direct .ru usage for simplicity since the early 2010s. Ukraine's .ua ccTLD, handled by Hostmaster LLC, features sector-specific SLDs including .gov.ua for government entities, .com.ua for businesses, .edu.ua for educational institutions, and .net.ua for networks, promoting targeted allocations while allowing limited direct .ua registrations. As of , ccTLDs collectively hold approximately 77 million registrations, representing about 20% of the global domain market, with GDPR compliance enhancing trust in data handling for these SLD structures.

In , second-level domains under top-level domains (ccTLDs) exhibit varied structures, often overshadowed by the dominance of top-level domains (gTLDs) like .com, which account for approximately 78% of domain adoptions in the region. This preference stems from the global recognition and ease of use of gTLDs, limiting ccTLD uptake despite efforts to promote local identities. Among major North American ccTLDs, the ' .us and Canada's .ca illustrate this trend, with .us showing particularly low utilization. The .us ccTLD, administered under oversight from the U.S. (NTIA), supports second-level domains organized by and affinity groups, as outlined in RFC 1480. Examples include state-specific domains like ca.us (for entities) and affinity namespaces such as .gov.us (reserved for federal government use) and .k12.us (for educational institutions). Direct second-level registrations (e.g., example.us) became available to U.S. citizens, residents, or entities with a U.S. starting in 2002, but adoption has remained modest, with only about 1.8 million registrations as of 2023—far below .com's scale—due to the entrenched preference for gTLDs. In the 2010s, promotional efforts by registry operator , including marketing campaigns and partnerships, led to a slight uptick in registrations, achieving a of around 4.4% from 2014 onward, though .com.us remains rarely used outside niche contexts. Canada's .ca ccTLD, managed by the Canadian Internet Registration Authority (CIRA), emphasizes direct second-level registrations (e.g., example.ca) for general use, with eligibility restricted to individuals or entities demonstrating Canadian presence—such as citizenship, residency, or business incorporation—enforced since to prioritize national identity. Second-level domains like .gc.ca (for federal government) and provincial ones such as .on.ca (for ) support specialized sectors, while legacy third-level options like .com.ca (commercial) and .org.ca (organizations) persist for grandfathered registrations but are not available for new ones. This structure has fostered stronger adoption than .us, reaching 3.4 million registrations by 2023, though growth slowed to 1.4% that year amid gTLD competition. In , the .mx ccTLD, overseen by NIC México, features prominent second-level domains tailored to entity types, including .com.mx for commercial purposes (open to all since 2009) and .net.mx for network providers. Direct .mx registrations (e.g., example.mx) are also permitted without restrictions, promoting broader accessibility and contributing to over 1 million total .mx domains. Similarly, Trinidad and Tobago's .tt ccTLD, managed by TTNIC, offers second-level domains such as .com.tt and .co.tt for commercial and corporate use, alongside direct .tt options (e.g., example.tt), with no local presence requirement for most registrations. These examples highlight regional patterns where ccTLD second-level domains enhance local relevance, yet overall North American reliance on gTLDs persists, with .us liberalization in the yielding only marginal gains in SLD utilization.

Oceania

In Oceania, the second-level domain (SLD) structures for country code top-level domains (ccTLDs) are prominently featured in Australia and New Zealand, with variations in smaller Pacific island nations. Australia's .au ccTLD, managed by the .au Domain Administration (auDA), employs a segmented SLD system to categorize registrations by purpose, including .com.au for commercial and business entities, .org.au for non-profit organizations, .gov.au for government bodies, and .edu.au for educational institutions. This structure ensures eligibility-based allocation, with auDA overseeing policy enforcement and registry operations through Identity Digital Australia. Since March 24, 2022, direct registrations at the second level (e.g., example.au) have been permitted alongside traditional SLDs, enhancing flexibility for individuals and businesses while maintaining strict nexus requirements for Australian connection. New Zealand's .nz ccTLD, administered by the Domain Name Commission (DNC) under InternetNZ, similarly utilizes SLDs for functional segmentation, with .co.nz serving as the primary for commercial purposes and .org.nz for organizations, mirroring the purpose-driven approach of .au. Direct .nz registrations are also supported, contributing to high adoption rates; as of August 2025, total .nz registrations exceeded 756,000, reflecting robust usage in a population of about 5.3 million. Like .au, .nz emphasizes moderated SLDs for sectors such as government (.govt.nz) and education (.ac.nz), promoting organized within the namespace. Among smaller Oceanic nations, 's .tv ccTLD operates primarily through direct second-level registrations without widespread SLD implementation, allowing global commercial sales that capitalize on the "TV" abbreviation for media and broadcasting entities. Reserved SLDs like .gov.tv exist for local third-level use, but the model prioritizes unrestricted direct access, generating significant revenue for Tuvalu despite limited domestic adoption. Regionally, Oceania's ccTLDs, dominated by .au and .nz, total over 4.9 million registrations as of mid-2025, with .au alone surpassing 4.2 million under management. A key focus across these domains is anti-abuse measures, including auDA's DNS abuse prevention framework to maintain trust and security, and DNC's Clean DNS tool for monitoring and mitigating malicious activities.

South America

In South America, second-level domains (SLDs) under country code top-level domains (ccTLDs) reflect the region's predominantly - and -speaking populations, with structures often incorporating language-specific categories for commercial, organizational, and governmental use. These SLDs facilitate localized online presence, supporting economic activities in a where adoption is rapidly growing due to increasing penetration. Regional ccTLD policies emphasize accessibility, with many allowing international registrations to attract foreign investment, while incorporating internationalized domain names (IDNs) to accommodate accented characters common in Iberian languages, such as ã in or ó in . Brazil's .br ccTLD, managed by Registro.br, operates a hierarchical system of over 140 predefined SLDs tailored to various sectors, promoting organized allocation. Key examples include .com.br for commercial entities, .org.br for non-profits, and .gov.br for government institutions, which require proof of eligibility such as business registration or official status. This structure has driven high adoption, with approximately 5.4 million domains registered under .br as of late 2025, representing over 40% of all South American ccTLD registrations and underscoring Brazil's dominant . IDN support enables registrations with Portuguese accents, enhancing usability for local users. In , the .ar ccTLD, administered by NIC Argentina, traditionally relies on SLDs like .com.ar for commercial purposes, .org.ar for organizations, and .gob.ar for government entities, which remain popular for their specificity. Since September 2020, direct second-level registrations under .ar have been opened to individuals and companies worldwide without local presence requirements, broadening access while maintaining the legacy SLD framework for targeted uses. This dual approach supports Argentina's diverse online ecosystem, with IDN capabilities allowing accented characters to align with . Chile's .cl ccTLD exemplifies a streamlined model, permitting direct second-level registrations (e.g., example.cl) open to anyone globally since its inception, without mandatory SLDs or local representatives. Managed by NIC Chile, it prioritizes simplicity and has grown to over 720,000 registrations by November 2025, fostering widespread adoption among businesses and individuals. Like its neighbors, .cl supports IDNs for accents, contributing to regional trends toward inclusive digital naming conventions. Across , the push for IDN integration in ccTLDs addresses linguistic needs, with growing support for diacritics in SLDs to improve accessibility and cultural relevance in online content. This evolution aligns with broader continental efforts to harmonize digital policies, influenced by economic blocs like , which indirectly promote cross-border digital through trade-focused infrastructure initiatives.

Historic second-level domains

Discontinued implementations

The .yu country code top-level domain (ccTLD) for the former featured second-level domains (SLDs) such as .co.yu for commercial entities, .ac.yu for academic institutions, and .org.yu for organizations, which were managed under a hierarchical structure until the country's dissolution in the early 2000s. Following the breakup into successor states, including , the .yu domain and its SLDs were phased out starting in 2006, with a transition period allowing migrations to new ccTLDs like .rs for and .me for . The discontinuation was finalized on March 30, 2010, when the .yu delegation was removed from the by , as the code was deemed transitively reserved and no longer representative of an existing entity; approximately 4,000 remaining .yu domains were redirected or expired during this process. In , the .ca ccTLD operated with a restrictive second-level domain structure prior to 2000, where registrations were limited to category-specific SLDs such as .com.ca for commercial use, .net.ca for networks, .org.ca for organizations, and provincial SLDs like .on.ca for , managed informally by volunteers at the (UBC) since 1987. This system aimed to organize domains by purpose or geography but was criticized for its complexity and limited accessibility, with only about 120,000 registrations by late 2000. Upon the Canadian Internet Registration Authority (CIRA) assuming control in December 2000, the policy shifted to allow direct second-level registrations (e.g., example.ca) for all eligible Canadian entities, simplifying the process and promoting broader adoption without the need for intermediary SLDs; legacy SLDs were grandfathered but new direct registrations became the standard. The .nl ccTLD for the began with informal direct registrations in the 1980s, managed by Piet Beertema at the Centrum Wiskunde & Informatica (CWI). This approach, formalized after the establishment of the Stichting Internet Domeinregistratie Nederland (SIDN) in 1996, prioritized simplicity and growth, leading to the first .nl domain (cwi.nl) in 1986 and rapid expansion without mandatory SLD hierarchies. By the late , the policy fully embraced open direct registrations, avoiding the segmented SLD models seen in other ccTLDs and contributing to .nl becoming one of the largest ccTLDs with over six million domains by 2020. For Tuvalu's .tv ccTLD, initial plans in the late 1990s envisioned a structured second-level domain system to allocate domains for local governmental, educational, and commercial uses within the island nation, following its assignment in 1996. However, these SLD frameworks were abandoned after the default of the first commercial partner, Information.ca, in 1999, which had been tasked with organized distribution; instead, Tuvalu opted for a global direct-registration model through a new agreement with dotTV Corporation (later acquired by VeriSign), emphasizing unrestricted worldwide sales to capitalize on the domain's appeal for television and video-related branding. This pivot, yielding an initial $50 million deal that tripled Tuvalu's national budget, reserved only select SLDs like .gov.tv for domestic third-level use while phasing out broader structured implementations in favor of commercial openness.

Notable evolutions and transitions

In the evolution of country code top-level domains (ccTLDs), several nations have transitioned from mandatory third-level registrations under specific second-level domains (SLDs) to optional direct second-level registrations under the ccTLD itself, simplifying structures and improving accessibility. This shift often responds to user demand for shorter, more intuitive domain names while maintaining compatibility with existing namespaces. Australia's .au namespace, managed by auDA, historically required third-level registrations such as example.com.au to denote commercial use or example.org.au for non-profits, creating a layered structure that added complexity. On 24 March 2022, auDA launched direct .au registrations, enabling names like example.au for eligible Australian entities and individuals, thereby reducing administrative hurdles and aligning with international standards for concise domains. This evolution has seen rapid adoption, with .au direct becoming the second-largest namespace in .au within its first year, behind only com.au. France's .fr ccTLD, overseen by AFNIC, has supported direct second-level registrations since its early days but initially restricted them to French residents, often channeling commercial entities toward third-level options like example.com.fr. A key transition occurred on 6 December 2011, when AFNIC expanded eligibility to include residents of the , countries, , , , and , allowing broader direct access to .fr domains without geographic barriers. Building on this, AFNIC's 2014 naming policy update further liberalized rules by opening registrations for one- or two-character .fr domains during a phased sunrise and general availability period starting 8 December 2014, enhancing options for short, premium names and contributing to .fr's growth to over 2.5 million registrations by year-end. The 's . , operated by , long emphasized third-level domains like .co.uk for , resulting in longer names such as example.co.uk. On 10 June 2014, Nominet introduced direct .uk registrations, running parallel to existing SLDs and permitting shorter alternatives like example.uk for UK-connected registrants. This launch included a sunrise phase for holders to prioritize desirable names, followed by general availability, and has supported an ongoing migration where .uk domains now represent a growing share of the namespace, with over 300,000 registrations in the first year alone. Globally, post-2012 trends in ccTLD management have favored SLD simplification, spurred by 's new (gTLD) program launched that year, which expanded the DNS and pressured ccTLDs to streamline for competitiveness. IANA, as part of , has facilitated these changes through updated delegation guidelines and support for flexible policies, encouraging managers to adopt direct registrations to reduce user friction without disrupting legacy systems. Concurrently, transitions involving Internationalized Domain Names (IDNs) in ccTLDs have gained momentum in the , with 's IDN Guidelines advancing to version 4.1 effective April 2025, enabling better integration of non-Latin scripts in direct SLDs and addressing issues like label validity and variant handling for multilingual accessibility.

Legal and policy issues

Intellectual property disputes

Intellectual property disputes involving second-level domains (SLDs) primarily revolve around and , where registrants acquire domain names in to profit from confusion with established brands. The (UDRP), administered by the (ICANN), provides a key mechanism for resolving such conflicts in generic top-level domains (gTLDs) like .com, requiring complainants to demonstrate trademark rights, lack of legitimate interest by the registrant, and registration or use. This policy applies directly to SLDs within participating gTLDs, enabling arbitration through providers such as the (WIPO). For example, successfully reclaimed over 20 SLDs, including nikeairmax97.com and nike-trademark.com, in a 2018 WIPO UDRP proceeding against a cybersquatter operating counterfeit sites. In the late and early , a surge of cases in .com SLDs highlighted vulnerabilities in , prompting legislative responses. High-profile disputes, such as those involving trademarks like "ava.com" and "people.com," exposed how squatters exploited the first-come, first-served system to demand exorbitant fees or divert traffic, leading to consumer confusion and brand dilution. These incidents directly influenced the enactment of the U.S. (ACPA) in November 1999, which created a federal against bad faith registration of SLDs confusingly similar to trademarks, allowing courts to award damages up to $100,000 per domain and enabling in rem actions against domain registrars. Similar challenges emerged in country-code top-level domains (ccTLDs), such as Australia's , where the auDRP—modeled after the UDRP—was introduced in 2001 to address abusive SLD registrations; for instance, Nirvana LLC secured transfer of nirvana.com.au and nirvanallc.com.au in a 2014 auDRP case before WIPO, citing by the registrant. In ccTLD SLDs, intellectual property challenges often involve generic or descriptive terms, where trademark owners seek control but face hurdles due to national policies emphasizing fair use. For example, in the .co.uk space, disputes over terms like "londonplumber.co.uk" illustrate how Nominet's Dispute Resolution Service (DRS) resolves claims by requiring evidence of abusive registration, rejecting monopolization of purely descriptive SLDs unless bad faith is proven. Such cases are typically handled through country-specific arbitration, like the UK's DRS, which prioritizes local trademark law and has seen declining filings since 2021, dropping to record lows amid stricter eligibility rules. The expansion of new gTLDs since 2012 has exacerbated registrations, creating more opportunities for squatters to target brand variants across diverse SLDs. WIPO data shows UDRP filings rising steadily, from 5,128 cases in 2021 to 6,192 in 2023 and 6,168 in 2024, reflecting over 5,000 annual disputes by and underscoring ongoing IP pressures in the domain ecosystem.

Regulatory and governance frameworks

The plays a central role in overseeing second-level domains (SLDs) within generic top-level domains (gTLDs) through contractual agreements with registry operators. These agreements outline the rights, duties, liabilities, and obligations required to operate gTLDs, including the management and registration of SLDs such as . 's gTLD Compliance Program monitors adherence to these provisions, divided into areas like data accuracy and abuse mitigation to ensure stable SLD operations. For country-code top-level domains (ccTLDs), the , a of , handles delegations and redelegations to national or local bodies upon authoritative requests, following guidelines that require managers and administrative contacts to be resident in the designated country. National regulations further shape SLD governance, often integrating cybersecurity and administrative requirements. In the , the NIS2 Directive (Directive (EU) 2022/2555), entered into force on January 16, 2023, with member states required to transpose it into national law by October 17, 2024, and application starting October 18, 2024, expands cybersecurity obligations for essential entities, including domain name registries, by mandating risk management measures and incident reporting; this impacts .eu SLDs and EU ccTLDs like .de and .fr, requiring verification procedures to combat abuse. In the United States, the (NTIA) supervises the .us ccTLD through a cooperative agreement with the registry operator, ensuring SLD administration aligns with policies for stability, security, and , as outlined in contracts dating back to 2007 and renewed periodically. WHOIS protocols for SLD registration data have evolved significantly due to privacy regulations. Since the EU (GDPR) entered into force on May 25, 2018, and contracted parties have implemented reforms to limit public access to in outputs, redacting information like names and addresses to comply with data protection principles. By August 21, 2025, 's Registration Data Policy standardizes redaction for gTLD SLD registrations, requiring contracted parties to collect but restrict disclosure of sensitive registrant details while maintaining access for legitimate purposes, such as . This policy replaces interim measures and includes specific redaction rules under Section 9.2 to balance transparency and . Looking ahead, discussions emphasize SLD sustainability in the face of emerging technologies like -based name systems, which pose challenges to the traditional (DNS). Recent publications and advisory committee meetings, such as those in 2024 and 2025, explore safeguards to maintain DNS stability while addressing alternative systems' growth, advocating for pragmatic policies to prevent fragmentation without endorsing specific integrations.

References

  1. [1]
    About Domain Names - ICANN
    Aug 30, 2018 · For example, the domain name "whois.icann.org" has three levels of hierarchy: "org" is the top-level, "icann" is the second-level, and "whois" ...
  2. [2]
    Country and Territory Names - icann
    Information on country and territory labels reserved from use at the second level of the Domain Name System (DNS) and how to request release of those labels ...
  3. [3]
    Internationalized Domain Names - ICANN
    The IDN Program also supports projects geared towards effective use of IDNs at the second-level of the Domain Name System, as guided by the community.
  4. [4]
    https://www.icann.org/en/icann-acronyms-and-terms/second-level-domain-en
  5. [5]
    ICANN Acronyms and Terms
    second-level domain(SLD)​​ A label that is found in a zone that is under a top-level domain. In example.com, the second-level domain is example.Missing: glossary | Show results with:glossary
  6. [6]
    ICANN Acronyms and Terms
    For example, in the domain name icann.org, the first part of the name, icann, represents a second-level domain within the top-level domain org. Domain names can ...
  7. [7]
    RFC 1034: Domain names - concepts and facilities
    STATUS OF THIS MEMO This RFC is an introduction to the Domain Name System (DNS), and omits many details which can be found in a companion RFC, "Domain Names - ...
  8. [8]
    Archives | Top-Level Domains (gTLDs) - ICANN
    Each TLD includes many second-level domains (such as "icann" in "www.icann.org"); each second-level domain can include a number of third-level domains ("www" in ...
  9. [9]
    Services for Registry Operators - icann
    Registry operators are the organizations that maintain the master database of all domain names registered under a particular generic top-level domain (gTLD).
  10. [10]
    RFC 1035: Domain names - implementation and specification
    This RFC describes the details of the domain system and protocol, and assumes that the reader is familiar with the concepts discussed in a companion RFC.
  11. [11]
    The Domain Name Registration Process - ICANN
    Nov 2, 2023 · The responsibilities of the registries include accepting registration requests, maintaining a database of the necessary domain name registration ...
  12. [12]
    .uk Domain Delegation Data
    ### Summary of .uk Domain Structure
  13. [13]
    RFC 3492 - Punycode: A Bootstring encoding of Unicode for ...
    Punycode is a simple and efficient transfer encoding syntax designed for use with Internationalized Domain Names in Applications (IDNA).
  14. [14]
    [PDF] Strategy: Introduction of New Generic Top-Level Domains - icann
    Sep 30, 2004 · TLD types or definitions are described by sponsored v. unsponsored and restricted v. unrestricted. o Generally speaking, an unsponsored gTLD ...
  15. [15]
    Work Efforts - GAC - icann
    ... generic" TLDs, or "gTLDs". They can be subdivided into two types, "sponsored" TLDs (sTLDs) and "unsponsored TLDs (uTLDs), as described in more detail below.
  16. [16]
    ICANN Lookup
    The ICANN registration data lookup tool gives you the ability to look up the current registration data for domain names and Internet number resources.Whois · I Need Help · FAQs · EPP Status Codes
  17. [17]
    RFC 1035 - Domain names - implementation and specification
    RFC 1035 describes the domain system and protocol, including standard queries, responses, and Internet class RR data formats.
  18. [18]
    DNIB.com Reports Internet Has 378.5 Million Domain Name ...
    Oct 23, 2025 · net domain name registrations totaled 10.6 million at the end of the third quarter of 2025, compared to 9.3 million domain name registrations ...
  19. [19]
    History of the New gTLD Program - ICANN
    In January 2012, ICANN launched the New gTLD Program and subsequently received 1,930 gTLD applications. Since the launch of the New gTLD Program, more than ...
  20. [20]
    About the Program | ICANN New gTLDs
    The New gTLD Program has enabled hundreds of new top-level domains in ASCII characters and in different scripts (Internationalized Domain Names) to enter into ...
  21. [21]
    ISO 3166 — Country Codes
    The codes for subdivisions are represented as the alpha-2 code for the country, followed by up to three characters. For example ID-RI is the Riau province ...ISO 3166-1:2020 · ISO 3166-2:2020 · Glossary for ISO 3166 · ISO/TC 46Missing: ccTLD second-
  22. [22]
    Root Zone Database - Internet Assigned Numbers Authority
    The Root Zone Database represents the delegation details of top-level domains, including gTLDs such as .com, and country-code TLDs such as .uk. As the manager ...<|control11|><|separator|>
  23. [23]
    Delegating or transferring a country-code top-level domain (ccTLD)
    Oct 25, 2013 · This document provides an overall guide to the country-code top-level domain (ccTLD) delegation and transfer (redelegation) process.
  24. [24]
    [PDF] Internationalized Domain Name (IDN) Report - June 2024 | ICANN
    Jul 31, 2024 · As of 18 June 2024, there were 1,447 TLDs3 delegated into the root zone. 309 are ccTLDs, of these, 61 are IDN ccTLDs. 1,138 are gTLDs, of these ...
  25. [25]
    ccTLD: A Guide to Country Code Top-Level Domains
    Oct 16, 2025 · A ccTLD, or country code top-level domain, is a two-letter domain extension assigned to a particular country (e.g., .uk for the United Kingdom).
  26. [26]
    What is a ccTLD? Guide, Full List, and Examples - Atom
    Jan 16, 2024 · The basic ccTLD structure consists of two letters after the last dot in a domain name. The letters represent the ISO 3166-1 alpha-2 code of the ...
  27. [27]
    What are ccTLDs (county code top-level domain names)? - IONOS
    Feb 5, 2025 · ccTLDs are top-level domains that are always made up of a two-letter code that is assigned to every country according to the 1974 ISO-3166 standard.
  28. [28]
    Resources for Country Code Managers - ICANN
    Second-Level LGR Reference · Resources ... Note: Registrations of domain names within two-letter country-code top-level domains (ccTLDs) such as .
  29. [29]
    [PDF] ccTLD Report - ITU
    The objective of this report is to outline the numerous technical and procedural aspects of establishing and operating a ccTLD (Country Code Top-Level Domain) ...
  30. [30]
    [PDF] ccTLD Best Practices & Considerations Balkan ccTLD Workshop ...
    ccTLDs are designated to operators who will operate them in the best interests of the local communities they serve. ‣ Operators should strive to tailor ...
  31. [31]
    [PDF] Characterizing and Mitigating Phishing Attacks at ccTLD Scale
    Restricted registration virtually eliminates phishing attacks that utilize new maliciously registered domains, but it does not prevent attacks using com-.
  32. [32]
    Russian IDN ccTLD .рф Opens for Registrations, Makes History
    Nov 16, 2010 · IDN ccTLD .рф - Российская Федерация, Russian Federation - receives 100000 domain name registrations within three hours of opening for ...
  33. [33]
    Africa Domain Name Industry Study - Hogan Lovells
    Sep 16, 2024 · The study highlights that in November 2023, the total number of domain names registered under African ccTLDs was just over 4.33 million, which is twice as much ...Missing: second- registrations
  34. [34]
    .dz - ICANNWiki
    Apr 28, 2025 · In addition to the .dz domain, NIC-DZ manages the following second-level domains: .com.dz: for commercial entities; .gov.dz ...Missing: SLDs | Show results with:SLDs
  35. [35]
    [PDF] NiRA DOMAIN NAME POLICY
    Oct 5, 2021 · In the Domain Name <internet.com.ng> the <.ng> is called the top or first level domain, the <.com> is the second level domain and <internet> is ...
  36. [36]
    .NG Top Level Domains are now available for registration (Nigeria)
    Apr 15, 2013 · Any Second Level Domain name, like yourdomain.ng can now be registered with Web Solutions. No local presence required. Previously, registration ...
  37. [37]
    Nigeria's active domain name hits 111146
    May 16, 2018 · For Nigeria, it is the .ng. NiRA disclosed that 7,319 (fresh registration and renewals) were registered in March 2018. Statistics made available ...
  38. [38]
    Home Page
    ### Summary of .za Second-Level Domains (SLDs)
  39. [39]
    African ccTLDs: Ranking, Benefits & Strategies for Local Domains
    Oct 31, 2025 · Top 10 African ccTLDs by Active Registration Volume (2025)​​ South Africa's . za dominates the African ccTLD landscape with 8.7 million domains— ...
  40. [40]
    .zm - ICANNWiki
    May 14, 2025 · Second-level Domains edit ·.ac.zm: for academic institutions; ·.biz.zm: for businesses; ·.co.zm and .com.zm: for commercial entities; ·.edu.zm: ...
  41. [41]
    https://icannwiki.org/.zm
  42. [42]
    Exploring African ccTLDs: Trends, Challenges and Opportunities.
    African ccTLDs encompass a diverse range of domains, each reflecting the unique characteristics of its respective nation. These ccTLDs serve as digital ...Missing: second- total
  43. [43]
    policies - Registry
    ... Domain Names (IDNs) managed by IN Registry. .IN Registry Price: Second level domain, e.g. .IN: ₹500. Third level domain, e.g. co.in, net.in, org.in: ₹400Missing: structure | Show results with:structure
  44. [44]
    gov.in Domain Registration Service India
    The Guidelines for domain registration has been revised; users are requested to check eligibility before registration.Whois · Check Availability · Procedure · List of Nodal Officers
  45. [45]
    NIXI has killed the “Dot In” domain name - Naavi.org
    Aug 5, 2025 · NIXI has killed the “Dot In” domain name · Surpassing 4.1 million . · Launching IDN ccTLDs in all 22 scheduled Indian languages, making India the ...
  46. [46]
    Guide to JP Domain Name / Japan Registry Services Co., Ltd.
    Any individual, group, or organization that has a permanent postal address in Japan may apply for a 2nd level, i.e., General-use JP Domain Name.
  47. [47]
    JP Q&A / Japan Registry Services Co., Ltd
    A1 Companies or individuals that have a permanent postal address in Japan are eligible for registration of 2nd level, i.e., General-use JP Domain Name. 3rd ...Domain Name Registration · Activation Of Registered Jp... · Whois Database Service
  48. [48]
    domain - 한국인터넷정보센터
    The .kr domain is a country code top-level domain, administered by KRNIC, and is further divided into second-level domains, including Hangeul domains.Missing: go. | Show results with:go.
  49. [49]
    한국인터넷정보센터(KRNIC) > DOMAIN > Policy
    Registrants must have a Korean address. Third-level domains use letters, numbers, and hyphens. Second-level domains can use Hangeul, letters, numbers, and ...
  50. [50]
    PKNIC - .pk Registry Provider
    For second level .PK domains, the minimum length for the domain name, exclusive of the .pk portion is four characters (e.g. 1234.pk). A four character ...
  51. [51]
    BTCL to Launch Second-Level .bd Domains with Sunrise Period
    Sep 26, 2025 · Bangladesh Telecommunications Company Limited (BTCL) is introducing second-level .bd domains, allowing shorter and more flexible web ...
  52. [52]
    [PDF] th and .ไทย Domain Name Registration Policy.
    The policy aims to clarify domain name categories, rules, eligibility, and dispute handling for .th and .ไทย domains, managed by THNICF.
  53. [53]
    Which TLDs and Websites Dominate the Asian Digital Market?
    E-Commerce Growth: Localized ccTLDs are crucial for tapping into Asia's diverse e-commerce markets. They reflect a significant portion of the traffic and ...
  54. [54]
    ICANN and the European Union General Data Protection Regulation
    The GDPR, and the risk of liability as a result of GDPR violations, had a significant impact on the public availability of gTLD registration data. Under ...
  55. [55]
    Buy .uk domains | Register your .uk domain today - Openprovider
    Registrations directly for the .uk TLD only opened up in 2014. Before this time, people could only register second-level domains under .uk, such as .co.uk ...Missing: .gov. | Show results with:.gov.
  56. [56]
    https://www.icann.org/resources/pages/icann-eu-gdpr-2022-12-22-en
  57. [57]
    Apply for a .gov.uk domain name: step by step
    Check if your public sector organisation can get a .gov.uk domain name: how to apply, use and manage your domain.
  58. [58]
    Evolution of the .fr and .re registration rules and procedures on ...
    Direct registration under .fr and .re will be favoured, with the goal to simplify the Charter. The major changes will take place on the subdomains listed below.Missing: history | Show results with:history
  59. [59]
    Registration - DENIC eG
    Registering a .de Domain · Step 1: Choose a Domain · Step 2: Check Availlability · Step 3: Choose a Provider · Step 4: Register your domain.
  60. [60]
    .com.es Domain Name - Spain | Netim
    Rating 4.8 (2,531) .COM.ES is a second-level extension of Spain. Mainly dedicated to companies and commercial activities, this extension is nevertheless open to all.
  61. [61]
    About .RU and .РФ
    The Coordination Center for TLD RU/РФ is the national registry (administrator) of the .RU and .РФ domains (Russian Federation) responsible for their stable and ...
  62. [62]
    About .UA domains - Rebel.com Help Center
    Oct 18, 2022 · .UA is the country-code top-level domain (ccTLD) for Ukraine. Related TLDs (if applicable): .com.ua, .edu.ua, .gov.ua, .net.ua, .in
  63. [63]
    CENTR TLD Market Report
    Sep 17, 2025 · Estimated total of 380 million registered domains worldwide ·.com remains dominant with 161 million domains (42% of all registrations) but ...
  64. [64]
    ccTLD or gTLD? Smart Domain Choices for Global ... - Nominus.com
    North America remains gTLD-dominated (78% adoption), while Europe shows strong ccTLD preference (62% usage). Asia-Pacific demonstrates balanced adoption (52 ...
  65. [65]
    RFC 1480 - The US Domain - IETF Datatracker
    This memo provides information for the Internet community. It does not specify an Internet standard. Distribution of this memo is unlimited.Missing: adoption | Show results with:adoption
  66. [66]
    usTLD Locality-Based Structure - US domain name
    The second level is designated for states and US territories, based on the two-letter state and territory codes assigned by the U.S. Postal Service, and this ...
  67. [67]
    [PDF] The Global Domain Name Market in 2023 | Afnic
    The 2023 global domain name market saw an upturn, with .COM performance affected, and a continued decline of .COM. New TLDs and "Penny nTLDs" were also ...Missing: direct registration
  68. [68]
    [PDF] 1331L5-19-R-1335-0001 Volume 1 – Technical Capability
    Jul 4, 2019 · us domain names under management by 15% since 2014. This represents a 4.4% compound annual growth rate (CAGR) for the usTLD, higher than the ...
  69. [69]
    Management and Administration of the .us Domain Space
    Aug 22, 2000 · The .us domain is the country code top level domain ... domain names directly under the usTLD and/or under specified second level domains.
  70. [70]
    General Registration Rules – CIRA
    ... ca (second level). With the exception of fourth level municipal domain names, CIRA does not allow the registration of new third or fourth level domain names ...
  71. [71]
    About .mx Domains | Domains - GoDaddy Help US
    Anyone can register .mx, and .com.mx domain names. .mx: Intended for Mexican businesses or individuals. .com.mx: Intended for ...
  72. [72]
    Buy domains .mx at the best price | Mexico - DonDominio
    MX extension of second level was released to the public and now there are more than 1,000,000 .MX domains registered. This extension is managed by NIC ...
  73. [73]
    TTNIC
    Domains Available: Single and Multiple Character Second Level Domains (e.g., a.tt and companyname.tt) Third Level Domains under co.tt, com.tt, org.tt, ...Domain Search Form · Domain Details · Register Domain · Contact Us
  74. [74]
    Domain Name Eligibility and Allocation Policy Rules for the Open ...
    This document sets out the policy rules that govern the granting of domain name licences in the open second level domains (2LDs) in the .au domain.
  75. [75]
    .au - Wikipedia
    In April 2016, auDA announced it would introduce registrations directly at the second level, such as "yourname.au".History · Operation · Structure · Registration policies and rules
  76. [76]
    .au direct: One year on | auDA
    Apr 10, 2023 · Australia's newest namespace, .au direct, launched on 24 March 2022. One year on, it's making an impact as the second largest namespace in .au, behind only com ...
  77. [77]
    auDA announces registration for .au direct namespaces to ... - ZDNET
    Aug 19, 2021 · Australian Domain Name Administrator (auDA) has announced it will release new .au direct namespaces from 24 March 2022 to give individuals ...
  78. [78]
    Moderated second levels - Domain Name Commission NZ
    Below is a full list of all moderated second level domains in .nz and the moderation policies for each.
  79. [79]
    .nz - Wikipedia
    nz domain names were available to everyone. The early New Zealand second-level domains ac.nz, . co.nz and . govt.nz were based on those used in the UK.History · Total registered domains · Second-level domains · Unmoderated
  80. [80]
    NZ domain name totals grow in 2025 - SiteHost
    Their latest numbers cover August 2025, when there were 756,719 domains registered. To give that number some context the highest total ever recorded was 758, ...Missing: statistics | Show results with:statistics
  81. [81]
    .nz Rules » Domain Name Commission NZ
    The .nz Register is a single register, shared registry system that manages the registration of .nz domain names and associated data.
  82. [82]
    .tv - Wikipedia
    Direct second-level registrations are allowed; some second-level domains such as gov.tv are reserved for third-level domains representing entities in Tuvalu.
  83. [83]
    auDA - X
    May 12, 2025 · au direct and the 39-year anniversary of .au Reaching 4,260,259 domains under management Announcing the 2024 Community Grant Program.
  84. [84]
    Trusted .au domain ranked in world's top 10 | Victorian Chamber of ...
    The .au domain is popular and trusted, ranked 10th globally, with 4.2 million registered. 76% of Australians trust .au websites, and 3/5 consumers support ...
  85. [85]
    Keep your .au secure: preventing DNS abuse | auDA
    auDA works to minimise DNS abuse in the .au domain to keep it trusted and secure. The .au domain is one of the most secure in the world.Missing: .nz Oceania
  86. [86]
    Compliance, enforcement, and .nz Rules (2022-2023)
    Clean DNS anti-abuse tool. We run Clean DNS dashboard to streamline our abuse monitoring. We also continually review and refine monitoring strings to the ...Missing: Oceania | Show results with:Oceania
  87. [87]
    YU – The History of Domain Names
    The .yu domain was phased out in March 2010 after a two-year transition to .rs and .me, and the .YU domain was removed from the DNS root zone.Missing: discontinued SLDs
  88. [88]
    Removal of the .YU domain formerly representing Yugoslavia
    The .YU domain was removed as it was for Yugoslavia, now multiple states, and the code was deemed "transitionally reserved" and to be retired.Missing: SLDs | Show results with:SLDs
  89. [89]
    YU domain becomes history | RNIDS
    Mar 30, 2010 · Upon finishing the transition from .YU to .RS domain, approximately 4000 users of the .YU domain prolonged the lifespan of their .YU domains ...Missing: discontinued SLDs .me
  90. [90]
    Yugoslav Internet Domain Name '.yu' Finally Discontinued - RFE/RL
    Mar 31, 2010 · yu" domain name were shut down on March 30. It said most of them had adopted the Serbian domain ".rs," which has been in use since March, 2008.Missing: SLDs .co. transition .me
  91. [91]
    History – CIRA - Canadian Internet Registration Authority | CIRA
    CIRA was created by volunteers led by John Demco, who built a platform to make .CA domain registration easier. CIRA was incorporated in 1998.Missing: second- pre-
  92. [92]
    Canadian Internet Registration Authority | Encyclopedia MDPI
    Nov 9, 2022 · In 2010, CIRA stopped accepting new registrations for third-level domains like "example.on.ca", which prior to CIRA's inception, were imposed on ...Missing: pre- | Show results with:pre-
  93. [93]
    Our milestones - SIDN
    SIDN's history is closely linked to that of .nl. And the history of .nl begins in the eighties. We are proud that .nl remains one of the world's largest and ...Missing: trials | Show results with:trials
  94. [94]
    The .nl domain turns thirty-five! | Domain names - SIDN
    Apr 22, 2021 · It was just a few days after .nl's creation, on 1 May 1986, that the very first .nl domain name – cwi.nl – was registered. Since then, more than ...Missing: SLD trials 1990s
  95. [95]
    Stichting Internet Domeinregistratie Nederland - ICANNWiki
    Oct 17, 2025 · Our history begins in the eighties edit. Our backstory begins in the 1980s. The Internet was new, and it needed a system for assigning domain ...Missing: trials direct
  96. [96]
    Island at the center of the domain-name storm - May 8, 2000 - CNN
    May 8, 2000 · Tuvalu first contracted with a Canadian organization to hand out the .tv domains, but when that firm defaulted on payments, the country found a ...Missing: abandoned | Show results with:abandoned
  97. [97]
    Tiny Tuvalu cashes in on '.tv' domains - ZDNET
    Apr 11, 2000 · Tiny Tuvalu cashes in on '.tv' domains ... The South Pacific scores more than three times its national budget by selling .tv domain to Idealab!
  98. [98]
    Tiny Tuvalu Profits From Web Name - The New York Times
    Sep 4, 2000 · But getting the rights to the .tv domain from Tuvalu would not be easy. Mr. Chapnik sent written proposals and spent months researching and ...
  99. [99]
    [PDF] Naming Policy for the French Network Information Centre - Afnic
    com. 37. Nor can the following domain names be registered: fr.fr, re.fr, pm.fr, yt.fr, tf.fr, wf.fr, nc.fr, pf.fr, mf.fr, bl.fr, gp.fr, mq.fr, gf.fr, co.fr ...
  100. [100]
    https://aboutus.godaddy.net/newsroom/news-releases/press-release-details/2014/Shorter-Sharper-UK-Domain-Name-Extension-Now-Available-Biggest-Change-in-the-UK-Domain-Space-Since-1985/default.aspx
  101. [101]
    Shorter, Sharper .UK Domain Name Extension Now ... - GoDaddy Inc.
    Jun 10, 2014 · UK comes from a successful line of domain names, including .CO.UK and .ORG.UK. The release of .UK will mark the biggest change in the UK domain ...Missing: direct | Show results with:direct
  102. [102]
    ICANN Highlights IDN Progress With Release of IDN Annual Report ...
    Aug 5, 2025 · IDN Implementation Guidelines Version 4.1 went into effect in April 2025, bolstering protections against consumer confusion and DNS Abuse.
  103. [103]
    Uniform Domain-Name Dispute-Resolution Policy - icann
    Under the policy, most types of trademark-based domain-name disputes must be resolved by agreement, court action, or arbitration before a registrar will cancel, ...
  104. [104]
    Nike Victorious in Domain Dispute as Brands Crack Down Online
    May 21, 2018 · Nike gained possession of 20 new domains, including nikeairmax97.com, shopsnikeukoutlet.com and nike-trademark.com, thanks to a World Intellectual Property ...
  105. [105]
    [PDF] Nirvana LLC obtains transfer of two '.au' domain ... - Hogan Lovells
    Australia - Hogan Lovells LLP. January 21 2015. In a recent domain name dispute under the '.au' Domain Name Dispute Resolution Policy (auDRP) before the World ...
  106. [106]
    How To Handle Domain Name Disputes In The UK | Sprintlaw UK
    Oct 30, 2025 · Generic Or Descriptive Terms​​ You can't monopolise truly generic terms. If the domain is descriptive (e.g., londonplumber.co.uk) and the ...
  107. [107]
    .UK Domain Disputes at Record Low - Nominet
    Feb 22, 2022 · UK domain name disputes for the past two years, but instead are reporting a record low in Complaints filed since the DRS launched back in 2001.
  108. [108]
    WIPO Domain Name Report 2024: UDRP case filings remain strong
    Jan 15, 2025 · In 2024, trademark owners from 133 countries filed 6,168 cases under the Uniform Domain Name Dispute Resolution Policy (UDRP) and national ...
  109. [109]
    Total Number of Cases per Year - WIPO
    Total Number of Cases per Year ; 2020, 4204 ; 2021, 5128 ; 2022, 5764 ; 2023, 6192.Missing: UDRP | Show results with:UDRP
  110. [110]
    gTLD Registry Agreements - icann
    gTLD Registry Agreements establish the rights, duties, liabilities, and obligations ICANN requires of registry operators to run gTLDs.
  111. [111]
    About gTLD Compliance Program - ICANN
    Registries that have executed the form of the new gTLD registry agreement must take reasonable steps to protect the registration data collected from registrars.
  112. [112]
    [PDF] principles and guidelines for the delegation and administration - GAC
    6.1 ICANN's mission with respect to ccTLD Registries is to co-ordinate the Internet's systems of top-level domain unique identifiers, and to ensure their stable ...
  113. [113]
    NIS2 Directive: securing network and information systems
    NIS2 raises the EU common level of ambition on cyber-security, through a wider scope, clearer rules and stronger supervision tools. It requires Member States to ...2022/2555 - EN · 2022/2555 - EN - EUR-Lex... · Commission Guidelines on the...
  114. [114]
    [PDF] Habits of excellence: why are European ccTLD abuse rates so low?
    Aug 9, 2023 · NIS2 imposes a new requirement for EU ccTLDs to have data 'verification procedures'. No definition of 'verification procedures' is given in the ...
  115. [115]
    .us Domain Space | National Telecommunications and Information ...
    NTIA supervises the administration of the DNS country code top level domain for the United States (usTLD or .us domain) through a contract.
  116. [116]
    [PDF] VIce: Pfl£S,/JiiNT KlCHAAD71'4/D1N- ~fZGrST/l.lf
    Jul 7, 2007 · NTIA has ensured the stability and security of the DNS country code top-level domain for the United. States (usTLD or .us domain) by supervising ...
  117. [117]
    WHOIS and Data Protection - GAC - icann
    The entry into force of the EU GDPR on 25 May 2018 has forced reform onto the ICANN Organization, Contracted Parties and the ICANN Community. Specifically, ...
  118. [118]
    ICANN Registration Data Policy Now In Effect for Contracted Parties
    Aug 21, 2025 · This milestone concludes a year-long transition period that took place from 21 August 2024 through 20 August 2025, during which contracted ...
  119. [119]
    Registration Data Policy - icann
    Policy Effective Date. This Policy is effective on 21 August 2025. The Interim Registration Data Policy for gTLDs will remain in effect until 20 August 2025.
  120. [120]
    [PDF] Registration Data Policy Frequently Asked Questions - icann
    Aug 21, 2025 · Redaction Requirements. 22. How should registration data be redacted based on the requirements in. Section 9.2 of the Registration Data Policy?
  121. [121]
    New ICANN Publications Explain Blockchains and Name System ...
    Oct 17, 2024 · New ICANN documents provide technical descriptions of blockchains and blockchain name systems.
  122. [122]
    [PDF] GAC Meeting with the SSAC - icann
    Oct 28, 2025 · What About Blockchain & Alternative Naming Systems? SSAC Work Party Focused on Keeping the DNS Safe as Technology Evolves. Develop clear ...
  123. [123]
    [PDF] ICANN | Challenges with Alternative Name Systems | OCTO-034
    Apr 27, 2022 · Some naming systems predate the DNS, and others have been recently proposed in the wake of the blockchain approach of decentralized systems.