Autonomous System
AS19043 — ONEBEACONINSURANCEGROUP - OneBeacon Insurance Group LTD(US)
Last fetched
AS19043 is an Autonomous System operated by ONEBEACONINSURANCEGROUP - OneBeacon Insurance Group LTD and registered in US. As of Wed, 20 May 2026 23:33:50 GMT, it announces 4 routed IP prefixes and peers with 3 other Autonomous Systems in the WhisperGraph BGP dataset.
Nutrition Label
Routing footprint
AS19043 announces 4 distinct routed prefixes. The 4-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.
Peering ecosystem
3 distinct peers via BGP. The first 3 are listed below.
Blast radius
Approximate count of dependent hostnames if AS19043 disappeared from the routing table.
~245 hostnames depend on this network.Sampled from 10 prefixes, snapshot Wed, 20 May 2026 23:33:50 GMT.
MOAS / hijack watch
Prefixes routed by AS19043 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 AS19043 is unique to AS19043 in the current routing snapshot.
Threat posture
Related pages
Pivot deeper into the graph from AS19043.
Cypher and MCP
Reproduce the headline metric directly against graph.whisper.security:
MATCH (a:ASN {name: "AS19043"})-[: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.