Regional Internet Registry
From Exampleproblems
A Regional Internet Registry (RIR) is an organization that oversees the registration and allocates IP addresses, both IPv4 and IPv6 and Autonomous System numbers in a certain region of the world. Namely there are currently 5 registries, all overseen by the Internet Assigned Numbers Authority (IANA):
- American Registry for Internet Numbers (ARIN) [1] for North America
- RIPE Network Coordination Centre (RIPE NCC) [2] for Europe, the Middle East and Central Asia
- Asia-Pacific Network Information Centre (APNIC) [3] for Asia and the Pacific region
- Latin American and Caribbean Internet Addresses Registry (LACNIC) [4] for Latin America and the Caribbean region
- African Network Information Centre (AfriNIC) [[5]] for Africa
Collectively the RIRs form part of the Number Resource Organization [6] formed as a body to represent their collective interests and ensure that policy statements are coordinated globally.
IANA delegates the allocation of IPv4 addresses to RIRs in large chunks (typically /8 =16.7 million addresses or more at a time), and the RIRs then follow their own policies for address allocation. They typically further delegate address assignment to Internet Service Providers in small chunks, with the smallest currently being /22 (=1024).
