Regional internet registry

A regional Internet registry (RIR) is an organization which is responsible for registering Internet numbers in a special part of the world.

There are 5 active RIRs in the world:

• American Registry for Internet Numbers (ARIN) for North America
• RIPE Network Coordination Centre (RIPE NCC) for Europe, the Middle East and Central Asia
• Asia-Pacific Network Information Centre (APNIC) for Asia and the Pacific region
• Latin American and Caribbean Internet Address Registry (LACNIC) for Latin America and the Caribbean region
• African Network Information Centre (AfriNIC) for Africa