Autonomous System
AS21241 — ADVANCED-SYSTEMHAUS ADVANCED Systemhaus GmbH(CZ)
Last fetched
AS21241 is an Autonomous System operated by ADVANCED-SYSTEMHAUS ADVANCED Systemhaus GmbH and registered in CZ. As of Wed, 20 May 2026 21:58:20 GMT, it announces 3 routed IP prefixes and peers with 2 other Autonomous Systems in the WhisperGraph BGP dataset.
Nutrition Label
Routing footprint
AS21241 announces 3 distinct routed prefixes. The 3-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.
Peering ecosystem
2 distinct peers via BGP. The first 2 are listed below.
Blast radius
Approximate count of dependent hostnames if AS21241 disappeared from the routing table.
~78 hostnames depend on this network.Sampled from 10 prefixes, snapshot Wed, 20 May 2026 21:58:20 GMT.
MOAS / hijack watch
Prefixes routed by AS21241 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 AS21241 is unique to AS21241 in the current routing snapshot.
Threat posture
Related pages
Pivot deeper into the graph from AS21241.
Cypher and MCP
Reproduce the headline metric directly against graph.whisper.security:
MATCH (a:ASN {name: "AS21241"})-[: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.