Autonomous System

AS21137 — FR-CAI France(FR)

Last fetched Thu, 21 May 2026 16:55:37 GMT

AS21137 is an Autonomous System operated by FR-CAI France and registered in FR. As of Thu, 21 May 2026 16:55:37 GMT, it announces 14 routed IP prefixes and peers with 1 other Autonomous System in the WhisperGraph BGP dataset.

Nutrition Label

Routing footprint

AS21137 announces 14 distinct routed prefixes. The 14-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.

Peering ecosystem

1 distinct peers via BGP. The first 1 are listed below.

Peer ASN	Operator	Country
AS8220	COLT COLT Technology Services Group Limited	GB

Blast radius

Approximate count of dependent hostnames if AS21137 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 AS21137 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 AS21137 is unique to AS21137 in the current routing snapshot.

Threat posture

Pivot deeper into the graph from AS21137.

Cypher and MCP

Reproduce the headline metric directly against graph.whisper.security:

MATCH (a:ASN {name: "AS21137"})-[:HAS_NAME]->(n:ASN_NAME)
OPTIONAL MATCH (a)-[:HAS_COUNTRY]->(c:COUNTRY)
RETURN a.name AS asn, n.name AS operator, c.name AS country

Or query Whisper from your own LLM workflow via the Whisper MCP server.