ResearchIRR · RIPE

AS-CSTNET N

An as-set registered in RIPE, maintained by CSTNET-MNT. It names 2 ASes and 1 set directly; followed all the way down, it reaches 4 ASes through 1 nested sets.

Members

What AS-CSTNET lists

2 ASes and 1 set, written in the object across every registry that holds it. Sets open their own page.

AS210281:AS-ECOCONNECTAS62429 CSTNETAS209558 PREMIUMKEAGRUP-AS
Expanded

Every AS it reaches

What a filter built from AS-CSTNET would let in: 4 ASes.

Show the 4 ASes
AS57209AS62429AS209558AS210281
Prefixes

What AS-CSTNET covers

Every route object in the IRR whose origin is one of the 4 ASes it reaches: the prefixes a filter built from AS-CSTNET (with bgpq4, say) would allow. 15 IPv4 and 1 IPv6. Every one is in the IRR API.

15 IPv4 prefixes
130.49.147.0/24153.80.252.0/24171.25.212.0/22171.25.212.0/24185.124.64.0/24185.135.44.0/24185.18.90.0/24185.35.116.0/22195.178.98.0/2431.24.87.0/2480.87.144.0/2091.195.16.0/2391.197.160.0/2291.210.92.0/2294.137.89.0/24
1 IPv6 prefix
2a00:db20::/32
Registries

Each registry’s copy

RIPE3 membersN
Maintained byCSTNET-MNT
Last modified2026-03-19T08:22:48Z
MembersAS62429 AS210281:AS-ECOCONNECT AS209558
mbrs-by-refN
Used by

Sets that include AS-CSTNET

AS-CLOUD-IXAS-CLOUD-IX-FULLAS-CLOUD-IX-LOCALAS-EURASIAPEERING_RSAS-NAUKANETAS-PITER-IX-MSKAS1299:AS-TWELVE99-RU-V4AS1299:AS-TWELVE99-RU-V6AS49869:AS-PITER-IX-MSK
Tools

Check AS-CSTNET live

IRR API, with prefixes