AS Numbers

An Autonomous System (AS) is a group of IP networks run by one or more network operators with a single, clearly defined routing policy. When exchanging exterior routing information, each AS is identified by a unique number: the Autonomous System Number (ASN). An AS is also sometimes referred to as a routing domain.

Current guidelines require a network to be multi-homed, and have a unique routing policy for an ASN to be assigned. Requests must show the routing policy of the AS. Any organisation can acquire an ASN but they must be requested by a Local Internet Registry (LIR).

• Find an LIR in your area

Requesting AS Numbers

As a member of the RIPE NCC, you would have access to the LIR Portal, this provides an easy and secure way to request resources.

Click here to request resources through the LIR Portal
Click here for more information about requesting resources by e-mail

Requesting an ASN requires RIPE NCC Membership.

To find out about how to become a member of the RIPE NCC, please visit this page