ASNs

An Autonomous System Number (ASN) is a numeric identifier used in the BGP protocol to identify which autonomous system a particular prefix is originating and transiting through. NetBox support both 32- and 64- ASNs.

ASNs must be globally unique within NetBox, and may be allocated from within a defined range. Each ASN may be assigned to multiple sites.

Fields

AS Number

The 32- or 64-bit AS number.

RIR

The Regional Internet Registry or similar authority responsible for the allocation of this particular ASN.

Sites

The site(s) to which this ASN is assigned.