AS-B4 B4 TELECOM
An as-set registered in ALTDB, maintained by MAINT-AS267321. It names 1 AS and 0 sets directly; followed all the way down, it reaches 1 ASes through 0 nested sets.
Members
What AS-B4 lists
1 AS and 0 sets, written in the object across every registry that holds it. Sets open their own page.
Expanded
Every AS it reaches
What a filter built from AS-B4 would let in: 1 ASes.
Show the 1 ASes
Prefixes
What AS-B4 covers
Every route object in the IRR whose origin is one of the 1 ASes it reaches: the prefixes a filter built from AS-B4 (with bgpq4, say) would allow. 4 IPv4 and 1 IPv6. Every one is in the IRR API.
4 IPv4 prefixes
1 IPv6 prefix
Registries
Each registry’s copy
ALTDB1 membersB4 TELECOM
| Maintained by | MAINT-AS267321 |
| Last modified | 2025-07-30 |
| Members | AS267321 |
| mbrs-by-ref | N |