Autonomous System
AS20657 — ATLANTIS Sofia, Bulgaria(BG)
Last fetched
AS20657 is an Autonomous System operated by ATLANTIS Sofia, Bulgaria and registered in BG. As of Thu, 21 May 2026 01:11:46 GMT, it announces 11 routed IP prefixes and peers with 5 other Autonomous Systems in the WhisperGraph BGP dataset.
Nutrition Label
Routing footprint
AS20657 announces 11 distinct routed prefixes. The 11-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.
Peering ecosystem
5 distinct peers via BGP. The first 5 are listed below.
Blast radius
Approximate count of dependent hostnames if AS20657 disappeared from the routing table.
~403 hostnames depend on this network.Sampled from 10 prefixes, snapshot Thu, 21 May 2026 01:11:46 GMT.
MOAS / hijack watch
Prefixes routed by AS20657 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 AS20657 is unique to AS20657 in the current routing snapshot.
Threat posture
Related pages
Pivot deeper into the graph from AS20657.
Cypher and MCP
Reproduce the headline metric directly against graph.whisper.security:
MATCH (a:ASN {name: "AS20657"})-[: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.