Autonomous System
AS27021 — AS-DGX - Quest Diagnostics, Inc.(US)
Last fetched
AS27021 is an Autonomous System operated by AS-DGX - Quest Diagnostics, Inc. and registered in US. As of Sun, 06 Sep 2026 18:38:04 GMT, it announces 17 routed IP prefixes and peers with 4 other Autonomous Systems in the WhisperGraph BGP dataset.
Nutrition Label
Routing footprint
AS27021 announces 17 distinct routed prefixes. The 17-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.
Peering ecosystem
4 distinct peers via BGP. The first 4 are listed below.
Blast radius
Count of dependent hostnames if AS27021 disappeared from the routing table.
703 hostnames depend on this network.Exact count across all 17 announced prefixes. Snapshot Wed, 22 Jul 2026 09:00:34 GMT.
MOAS / hijack watch
Prefixes routed by AS27021 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 AS27021 is unique to AS27021 in the current routing snapshot.
Threat posture
Related pages
Pivot deeper into the graph from AS27021.
Cypher and MCP
Reproduce the headline metric directly against graph.whisper.security:
MATCH (a:ASN {name: "AS27021"})-[: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.