Autonomous System

AS40964 — HOSTMASTER - City and County of Denver - Denver International Airport(CZ)

Last fetched Wed, 20 May 2026 21:53:41 GMT

AS40964 is an Autonomous System operated by HOSTMASTER - City and County of Denver - Denver International Airport and registered in CZ. As of Wed, 20 May 2026 21:53:41 GMT, it announces 4 routed IP prefixes and peers with 1 other Autonomous System in the WhisperGraph BGP dataset.

Nutrition Label

Routing footprint

AS40964 announces 4 distinct routed prefixes. The 4-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
AS28917	WIRENINE-AS	LT

Blast radius

Approximate count of dependent hostnames if AS40964 disappeared from the routing table.

~70 hostnames depend on this network.Sampled from 10 prefixes, snapshot Wed, 20 May 2026 21:53:41 GMT.

MOAS / hijack watch

Prefixes routed by AS40964 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 AS40964 is unique to AS40964 in the current routing snapshot.

Threat posture

Pivot deeper into the graph from AS40964.

Cypher and MCP

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

MATCH (a:ASN {name: "AS40964"})-[: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.