Autonomous System
AS25151 — CYSO-AS - Cyso Group B.V.(NL)
Last fetched
AS25151 is an Autonomous System operated by CYSO-AS - Cyso Group B.V. and registered in NL. As of Sun, 06 Sep 2026 12:47:13 GMT, it announces 19 routed IP prefixes and peers with 14 other Autonomous Systems in the WhisperGraph BGP dataset.
Nutrition Label
Routing footprint
AS25151 announces 19 distinct routed prefixes. The 19-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.
Peering ecosystem
14 distinct peers via BGP. The first 14 are listed below.
| Peer ASN | Operator | Country |
|---|---|---|
| AS1299 | TWELVE99 - Arelion Sweden AB | SE |
| AS15535 | VIRTUALXS-AS - Virtual Access Internet BV | NL |
| AS200020 | NBIP-AS - Stichting NBIP-NaWas | NL |
| AS210728 | CYSO-AS-DE - Cyso Group B.V. | NL |
| AS2914 | NTT-DATA-2914 - NTT America, Inc. | US |
| AS29632 | NASSIST-AS - Netassist International EOOD | BG |
| AS3356 | LEVEL3 - Level 3 Parent, LLC | US |
| AS42708 | GLESYS - Glesys AB | SE |
| AS48185 | team_blue - team.blue NV | BE |
| AS48362 | TKSWF-AS - Stadtwerke Feldkirch | AT |
| AS49559 | IPT-1-IX - A-Systems Sp. z o.o. | PL |
| AS50673 | Serverius-as - Serverius Holding B.V. | NL |
| AS56655 | GIGAHOST - Gigahost AS | NO |
| AS6939 | HURRICANE - Hurricane Electric LLC | US |
Blast radius
Count of dependent hostnames if AS25151 disappeared from the routing table.
26,369 hostnames depend on this network.Exact count across all 25 announced prefixes. Snapshot Wed, 15 Jul 2026 08:00:43 GMT.
MOAS / hijack watch
Prefixes routed by AS25151 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 AS25151 is unique to AS25151 in the current routing snapshot.
Threat posture
Related pages
Pivot deeper into the graph from AS25151.
Cypher and MCP
Reproduce the headline metric directly against graph.whisper.security:
MATCH (a:ASN {name: "AS25151"})-[: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.