Autonomous System
AS21191 — ASN-SEVERTTK(RU)
Last fetched
AS21191 is an Autonomous System operated by ASN-SEVERTTK and registered in RU. As of Thu, 21 May 2026 15:21:37 GMT, it announces 66 routed IP prefixes and peers with 3 other Autonomous Systems in the WhisperGraph BGP dataset.
Nutrition Label
Routing footprint
AS21191 announces 66 distinct routed prefixes. The 25-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.
- 5.43.240.0/22
- 5.43.244.0/22
- 5.178.24.0/21
- 37.99.216.0/21
- 37.99.220.0/22
- 80.92.0.0/24
- 80.92.1.0/24
- 80.92.2.0/24
- 80.92.3.0/24
- 80.92.4.0/24
- 80.92.5.0/24
- 80.92.6.0/24
- 80.92.7.0/24
- 80.92.8.0/24
- 80.92.9.0/24
- 80.92.10.0/24
- 80.92.11.0/24
- 80.92.12.0/24
- 80.92.13.0/24
- 80.92.14.0/23
- 80.92.0.0/19
- 80.92.16.0/24
- 80.92.17.0/24
- 80.92.18.0/24
- 80.92.19.0/24
Peering ecosystem
3 distinct peers via BGP. The first 3 are listed below.
Blast radius
Approximate count of dependent hostnames if AS21191 disappeared from the routing table.
Blast radius: Computing — check back later. The precompute pipeline refreshes this panel within a few days.
MOAS / hijack watch
Prefixes routed by AS21191 that another Autonomous System also announces. A non-empty list is one of the strongest BGP-hijack signals available without active probes.
No active MOAS conflicts. Every prefix announced by AS21191 is unique to AS21191 in the current routing snapshot.
Threat posture
Related pages
Pivot deeper into the graph from AS21191.
Cypher and MCP
Reproduce the headline metric directly against graph.whisper.security:
MATCH (a:ASN {name: "AS21191"})-[:HAS_NAME]->(n:ASN_NAME)
OPTIONAL MATCH (a)-[:HAS_COUNTRY]->(c:COUNTRY)
RETURN a.name AS asn, n.name AS operator, c.name AS countryOr query Whisper from your own LLM workflow via the Whisper MCP server.