ResearchIRR · RIPE

AS-B4RN B4RN AS-SET

An as-set registered in RIPE, maintained by B4RN-MNT. It names 2 ASes and 0 sets directly; followed all the way down, it reaches 2 ASes through 0 nested sets.

Members

What AS-B4RN lists

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

AS58273 B4RN-AS AS213513 COMPUTLE

Expanded

Every AS it reaches

What a filter built from AS-B4RN would let in: 2 ASes.

Show the 2 ASes

AS58273 AS213513

Prefixes

What AS-B4RN covers

Every route object in the IRR whose origin is one of the 2 ASes it reaches: the prefixes a filter built from AS-B4RN (with bgpq4, say) would allow. 64 IPv4 and 25 IPv6. Every one is in the IRR API.

64 IPv4 prefixes

148.252.16.0/20 148.252.16.0/23 148.252.16.0/24 148.252.17.0/24 148.252.18.0/23 148.252.20.0/23 148.252.22.0/23 148.252.24.0/22 148.252.28.0/22 149.86.240.0/20 151.243.39.0/24 180.210.221.0/24 185.159.91.0/24 185.201.32.0/22 185.201.32.0/24 185.201.33.0/24 185.201.34.0/23 185.217.156.0/23 185.217.156.0/24 185.217.157.0/24 185.217.158.0/23 185.243.104.0/22 185.243.104.0/24 185.243.105.0/24 185.243.106.0/24 185.89.32.0/22 194.113.44.0/22 194.113.44.0/23 194.113.44.0/24 194.113.45.0/24 194.113.46.0/23 194.31.184.0/22 194.31.184.0/23 194.31.184.0/24 194.31.185.0/24 194.31.186.0/23 194.31.186.0/24 194.31.187.0/24 194.4.152.0/24 5.83.10.0/23 5.83.12.0/22 5.83.8.0/21 5.83.8.0/24 5.83.9.0/24 66.92.54.0/24 88.97.112.0/20 88.97.112.0/22 88.97.116.0/22 88.97.120.0/21 88.97.120.0/22 88.97.124.0/22 88.97.128.0/19 88.97.128.0/21 88.97.128.0/22 88.97.132.0/22 88.97.136.0/21 88.97.136.0/22 88.97.140.0/22 88.97.144.0/22 88.97.148.0/22 88.97.152.0/21 88.97.152.0/22 88.97.156.0/22 91.198.40.0/24

25 IPv6 prefixes

Registries

Each registry’s copy

RIPE2 membersB4RN AS-SET

Maintained by	B4RN-MNT
Last modified	2025-05-02T07:49:59Z
Members	AS58273 AS213513
mbrs-by-ref	N

Used by

Sets that include AS-B4RN

AS-GBXS6 AS-TNP AS57932:AS-IXLEEDS-MLP

Tools

Check AS-B4RN live

IRR API, with prefixes