Autonomous System
AS21791 — HUNTSVILLE-MEMORIAL-HOSPITAL - HUNTSVILLE MEMORIAL HOSPITAL(US)
Last fetched
AS21791 is an Autonomous System operated by HUNTSVILLE-MEMORIAL-HOSPITAL - HUNTSVILLE MEMORIAL HOSPITAL and registered in US. As of Thu, 21 May 2026 01:07:25 GMT, it announces 1 routed IP prefix and peers with 1 other Autonomous System in the WhisperGraph BGP dataset.
Nutrition Label
Routing footprint
AS21791 announces 1 distinct routed prefix. The 1-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 |
|---|---|---|
| AS7018 | ATT-INTERNET4 - AT&T Enterprises, LLC | US |
Blast radius
Approximate count of dependent hostnames if AS21791 disappeared from the routing table.
~7 hostnames depend on this network.Sampled from 10 prefixes, snapshot Thu, 21 May 2026 01:07:25 GMT.
MOAS / hijack watch
Prefixes routed by AS21791 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 AS21791 is unique to AS21791 in the current routing snapshot.
Threat posture
Related pages
Pivot deeper into the graph from AS21791.
Cypher and MCP
Reproduce the headline metric directly against graph.whisper.security:
MATCH (a:ASN {name: "AS21791"})-[: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.