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Autonomous System

AS21873

Last fetched

AS21873 is an Autonomous System. Live infrastructure data is temporarily unavailable; refresh in a moment.

Nutrition Label

WHISPER CANON · AS21873Routing diversity—Peering density—MOAS conflict—Threat-feed listings—WHOIS transparency—Resolver footprint—canon.whisper.security/asn/21873

Routing footprint

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Peering ecosystem

Peering data is temporarily unavailable. Refresh in a moment to retry.

Blast radius

Count of dependent hostnames if AS21873 disappeared from the routing table.

278 hostnames depend on this network.Exact count across all 25 announced prefixes. Snapshot Fri, 10 Jul 2026 06:00:54 GMT.

MOAS / hijack watch

Prefixes routed by AS21873 that another Autonomous System also announces. A non-empty list is one of the strongest BGP-hijack signals available without active probes.

MOAS conflict data is temporarily unavailable. Refresh in a moment to retry.

Threat posture

Related pages

Pivot deeper into the graph from AS21873.

Cypher and MCP

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

MATCH (a:ASN {name: "AS21873"})-[: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.