netbox-community-netbox/docs/models/ipam/asn.md

# ASNs

An Autonomous System Number (ASN) is a numeric identifier used in the BGP protocol to identify which [autonomous system](https://en.wikipedia.org/wiki/Autonomous_system_%28Internet%29) 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](./asnrange.md). Each ASN may be assigned to multiple [sites](../dcim/site.md).

## Fields

### AS Number

The 32- or 64-bit AS number.

### RIR

The [Regional Internet Registry](./rir.md) or similar authority responsible for the allocation of this particular ASN.

### Sites

The [site(s)](../dcim/site.md) to which this ASN is assigned.
Closes #8550: Implement ASN ranges (#11835) * Move ASN to a separate module * Move ASNField from dcim to ipam * Introduce ASNRange model * Add relationship from ASN to ASNRange * Add an available-asns API endpoint * Add RIR assignment for ASNRange * Add standard tests * Move child ASNs to a tabbed view * Remove FK on ASN to ASNRange * Add tests for provisioning available ASNs * Add docs for ASNRange 2023-02-27 16:36:05 -05:00			`# ASNs`
#6732 - Add documentation 2021-11-03 12:22:44 -05:00
Update IPAM models documentation 2022-08-16 15:32:00 -04:00			`An Autonomous System Number (ASN) is a numeric identifier used in the BGP protocol to identify which [autonomous system](https://en.wikipedia.org/wiki/Autonomous_system_%28Internet%29) a particular prefix is originating and transiting through. NetBox support both 32- and 64- ASNs.`
#6732 - Add documentation 2021-11-03 12:22:44 -05:00
Closes #8550: Implement ASN ranges (#11835) * Move ASN to a separate module * Move ASNField from dcim to ipam * Introduce ASNRange model * Add relationship from ASN to ASNRange * Add an available-asns API endpoint * Add RIR assignment for ASNRange * Add standard tests * Move child ASNs to a tabbed view * Remove FK on ASN to ASNRange * Add tests for provisioning available ASNs * Add docs for ASNRange 2023-02-27 16:36:05 -05:00			`ASNs must be globally unique within NetBox, and may be allocated from within a [defined range](./asnrange.md). Each ASN may be assigned to multiple [sites](../dcim/site.md).`
#6732 - Add documentation 2021-11-03 12:22:44 -05:00
Update IPAM models documentation 2022-08-16 15:32:00 -04:00			`## Fields`
#6732 - Add documentation 2021-11-03 12:22:44 -05:00
Update IPAM models documentation 2022-08-16 15:32:00 -04:00			`### AS Number`
#6732 - Add documentation 2021-11-03 12:22:44 -05:00
Update IPAM models documentation 2022-08-16 15:32:00 -04:00			`The 32- or 64-bit AS number.`
#6732 - Add documentation 2021-11-03 12:22:44 -05:00
Update IPAM models documentation 2022-08-16 15:32:00 -04:00			`### RIR`

			`The [Regional Internet Registry](./rir.md) or similar authority responsible for the allocation of this particular ASN.`

			`### Sites`

			`The [site(s)](../dcim/site.md) to which this ASN is assigned.`