When an organisation exhausts its allocated IP address block, it must submit a justification request to its RIR for additional resources. This process requires the organisation to provide documentation showing that it has efficiently utilised its existing allocation and that growth projections warrant additional addresses. Most RIRs enforce strict policies to prevent unnecessary hoarding and promote conservation, particularly due to the scarcity of IPv4 addresses. If approved, the organisation may receive a new block or be advised to adopt IPv6. In some cases, especially with IPv4 exhaustion, RIRs may place the organisation on a waiting list or suggest acquiring addresses through an RIR-facilitated transfer market, where unused IP space can be reassigned between organisations under registry oversight. The RIR will verify compliance with policies, ensure proper documentation, and update the public whois database. Encouraging IPv6 deployment is a long-term strategy, but many organisations continue to depend on efficient IPv4 address management.

RIRs implement several mechanisms to prevent fraudulent allocation and misuse of IP address space. Firstly, they maintain strict justification policies, requiring detailed usage plans, network diagrams, and growth forecasts before issuing new allocations. Secondly, they operate transparent whois databases that track the ownership and usage of address blocks, allowing public verification of records. Thirdly, they regularly audit members to ensure addresses are being used as originally claimed, and that organisations aren’t reselling, leasing, or transferring them in violation of registry agreements. RIRs also enforce return policies, where unused or abandoned address blocks can be reclaimed and reallocated. Some RIRs support resource certification systems like RPKI (Resource Public Key Infrastructure), which cryptographically verifies the ownership and routing of IP prefixes to prevent route hijacking. All policy changes are developed in open forums, and suspected abuse can be reported by the community, helping registries maintain the integrity of Internet resource distribution.

Internet registries actively support global connectivity by providing targeted resources and capacity-building programmes in developing regions. RIRs such as AFRINIC and LACNIC focus on regions that traditionally have less Internet infrastructure and access. They offer subsidised membership fees, technical training, and IPv6 deployment workshops to local ISPs, universities, and governments. Registries also engage in policy discussions that ensure equitable resource distribution, allowing smaller or emerging networks to obtain IP addresses and ASNs under more accessible terms. Many RIRs run community development funds that support local projects improving digital infrastructure, security, and education. Additionally, Internet registries collaborate with global organisations such as ISOC (Internet Society) and ITU (International Telecommunication Union) to align efforts and bridge the digital divide. By offering technical guidance, funding support, and political representation, registries help expand Internet access, ensure inclusion in global Internet governance, and build resilient networks in underserved parts of the world.

While Internet registries do not enforce laws or investigate criminal activity directly, they play a crucial role in supporting cybercrime investigations and responding to abuse complaints. Registries maintain public whois databases that list the organisations or individuals responsible for allocated IP addresses and ASNs. Law enforcement agencies, cybersecurity researchers, and abuse desks use this information to trace sources of malicious activity such as spam, DDoS attacks, or unauthorised access attempts. Registries may also provide historical data on IP address ownership, aiding attribution. If fraudulent resource usage is detected, such as forged documentation or misrepresented allocations, the registry can revoke or reclaim those resources. Registries also support routing security initiatives like RPKI to help network operators validate routing announcements and prevent IP prefix hijacking. Although registries don’t monitor content or traffic, their accurate and transparent record-keeping is essential for the accountability and stability of the Internet’s technical infrastructure.

Internet registries themselves do not adjudicate domain name disputes directly but support resolution through established frameworks like the Uniform Domain-Name Dispute-Resolution Policy (UDRP). This policy, developed by ICANN, applies to most generic top-level domains (gTLDs) and enables trademark holders to challenge domain registrations that infringe on their rights. When a dispute arises, a complaint can be filed with an approved dispute resolution provider, such as WIPO (World Intellectual Property Organization). The process involves evaluating evidence of bad faith, legitimate use, and trademark ownership. If the panel rules in favour of the complainant, the domain may be transferred or cancelled. Registrars are required to comply with these rulings. For country-code top-level domains (ccTLDs), each registry may have its own dispute resolution procedure, often aligned with national laws. Internet registries also maintain accurate ownership records, which are essential in verifying registrants and supporting legal or administrative actions in cases of conflicting claims.