Welcome to ARIN
Established in December 1997, the American Registry for Internet Numbers (ARIN) is a nonprofit, member-based organization that supports the operation and growth of the Internet.
ARIN accomplishes this by carrying out its core service, which is the management and distribution of Internet number resources such as Internet Protocol (IP) addresses and Autonomous System Numbers (ASNs). ARIN manages these resources within its service region, which is comprised of Canada, the United States, and many Caribbean and North Atlantic islands. ARIN also coordinates policy development by the community and advances the Internet through informational outreach.
ARIN and the Regional Internet Registry System
ARIN is a Regional Internet Registry (RIR) incorporated in the Commonwealth of Virginia, USA. There are five RIRs covering the globe, and each RIR:
- Provides services related to the technical coordination and management of Internet number resources in its respective service region;
- Participates in the global Internet community;
- Facilitates the development of policy decisions made by its members and any other interested Internet citizens;
- Is a nonprofit, membership organization;
- Is governed by an executive board elected by its membership.
Mission Statement and Services
The ARIN Mission Statement highlights the main service areas that ARIN covers:
ARIN, a nonprofit member-based organization, supports the operation of the Internet through the management of Internet number resources throughout its service region; coordinates the development of policies by the community for the management of Internet Protocol number resources; and advances the Internet through informational outreach.
ARIN’s services are grouped in four areas: Registration, Organization, Policy Development, and Technical.
Registration Services refer to the technical coordination and management of Internet number resources, and they include:
- Internet number resource management
- IP address space allocation, transfer, and record maintenance
- ASN allocation, transfer, and record maintenance
- DNS (Reverse)
Organization Services refer to interaction between ARIN and its members and stakeholders. They include:
Policy Development Services
Policy Development Services facilitate the development of policy for the technical coordination and management of Internet number resources in the ARIN region. They include:
ARIN also develops technical services to support the evolving needs of the Internet community. They include:
- Whois and Registration Data Access Protocol (RDAP) directory services
- Reverse Domain Name System (DNS) services
- Cryptographic Authentication
- Internet Routing Registry (IRR)
- Community software repository
- Resource Public Key Infrastructure (RPKI) repository
- DNS Security (DNSSEC)
- Operational Test and Evaluation environment (OT&E)
- The ARIN @ a Glance Fact Sheet (PDF) includes an overview of ARIN’s services, organizational structure, membership, and resources.