Autonomous System
AS21057 — OVERON-SPAIN-AS Ciudad de la Imagen - Madrid(ES)
Last fetched
AS21057 is an Autonomous System operated by OVERON-SPAIN-AS Ciudad de la Imagen - Madrid and registered in ES. As of Thu, 21 May 2026 15:41:28 GMT, it announces 14 routed IP prefixes and peers with 7 other Autonomous Systems in the WhisperGraph BGP dataset.
Nutrition Label
Routing footprint
AS21057 announces 14 distinct routed prefixes. The 14-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.
Peering ecosystem
7 distinct peers via BGP. The first 7 are listed below.
| Peer ASN | Operator | Country |
|---|---|---|
| AS174 | COGENT-174 - Cogent Communications, LLC | US |
| AS41313 | NOVATEL-AS 2 Kukush str., floor 1, office 102 | BG |
| AS8866 | VIVACOM-AS BULGARIA | BG |
| AS7018 | ATT-INTERNET4 - AT&T Enterprises, LLC | US |
| AS6762 | SEABONE-NET TELECOM ITALIA SPARKLE S.p.A. | IT |
| AS3356 | LEVEL3 - Level 3 Parent, LLC | US |
| AS3257 | GTT-BACKBONE GTT | US |
Blast radius
Approximate count of dependent hostnames if AS21057 disappeared from the routing table.
Blast radius: Computing — check back later. The precompute pipeline refreshes this panel within a few days.
MOAS / hijack watch
Prefixes routed by AS21057 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 AS21057 is unique to AS21057 in the current routing snapshot.
Threat posture
Related pages
Pivot deeper into the graph from AS21057.
Cypher and MCP
Reproduce the headline metric directly against graph.whisper.security:
MATCH (a:ASN {name: "AS21057"})-[: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.