ResearchIRR · RIPE

AS-CIRCULAR circular and customer AS

An as-set registered in RIPE, maintained by CIRCULAR-NOC, CIRCULAR-NET. It names 1 AS and 0 sets directly; followed all the way down, it reaches 1 ASes through 0 nested sets.

Members

What AS-CIRCULAR lists

1 AS and 0 sets, written in the object across every registry that holds it. Sets open their own page.

AS15518 CIRC-AS
Expanded

Every AS it reaches

What a filter built from AS-CIRCULAR would let in: 1 ASes.

Show the 1 ASes
AS15518
Prefixes

What AS-CIRCULAR covers

Every route object in the IRR whose origin is one of the 1 ASes it reaches: the prefixes a filter built from AS-CIRCULAR (with bgpq4, say) would allow. 11 IPv4 and 1 IPv6. Every one is in the IRR API.

11 IPv4 prefixes
212.86.160.0/20212.86.180.0/22212.86.188.0/22213.153.64.0/22213.153.64.0/23213.153.67.0/24213.153.72.0/22213.153.72.0/24213.153.73.0/24213.153.74.0/24213.153.75.0/24
1 IPv6 prefix
2a00:1180::/32
Registries

Each registry’s copy

RIPE1 memberscircular and customer AS
Maintained byCIRCULAR-NOC, CIRCULAR-NET
Last modified2025-10-24T11:11:04Z
MembersAS15518
mbrs-by-refN
Tools

Check AS-CIRCULAR live

IRR API, with prefixes