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AS25151

CYSO

Netherlands (NL)

ASN Information

AS NumberAS25151
AS NameCYSO-AS
OrganizationCYSO-AS Cyso Group B.V.
Also known asCYSO
CountryNetherlands (NL)
RegistryRIPE NCC
ASN TypeContent
Last Seen
Announcement Count18
IPv4 Prefix Count15
IPv6 Prefix Count3
RPKI StatusValid ×11NotFound ×4Unknown (could not be determined) ×3
IRR RecordsView IRR route objects
Websitehttp://www.cyso.com ↗

AS Path to AS25151

  1. 58511ANYCAST-GLOBAL-BACKBONE - Anycast Global Backbone
  2. 25151Origin

Most common path, seen 16× in route collector data, latest at a collector in Singapore (2026-10-16 09:26:57 UTC). Prepends collapsed.

Route Collectors (Visibility)

Sydney: 11 peer session(s)São Paulo: 17 peer session(s)Johannesburg: 19 peer session(s)Singapore: 22 peer session(s)Amsterdam: 26 peer session(s)London: 32 peer session(s)Eugene, OR: 56 peer session(s)
High (10+ peers)Medium (3–9)Low (1–2)

Approximate route collector locations, coloured by peer sessions carrying this AS's routes.

Announced Prefixes (18)

View All →
PrefixFamilyRPKILast Seen
2.57.56.0/24IPv4ValidNot looked up yet
37.46.136.0/21IPv4ValidNot looked up yet
37.72.138.0/24IPv4NotFoundNot looked up yet
45.134.223.0/24IPv4ValidNot looked up yet
62.129.139.0/24IPv4NotFoundNot looked up yet
62.129.149.0/24IPv4NotFoundNot looked up yet
80.85.160.0/23IPv4ValidNot looked up yet
81.24.0.0/20IPv4ValidNot looked up yet

Peers (122)

View All →
ASNameRelationshipPathsLast Seen
AS3356LEVEL3 - Level 3 Parent, LLCUpstream (inferred)493
AS200020NBIP-AS Stichting NBIP-NaWasUpstream (inferred)77
AS1299TWELVE99 Arelion Sweden ABUpstream (inferred)58
AS2914NTT-DATA-2914 - NTT America, Inc.Upstream (inferred)53
AS58511ANYCAST-GLOBAL-BACKBONE - Anycast Global BackboneUpstream (inferred)16
AS30844LIQUID-AS Liquid Telecommunications LtdUpstream (inferred)15
AS37497Network Platforms (PTY) LTD - Network Platforms (PTY) LTDUpstream (inferred)12
AS49544i3Dnet i3D.net B.VUpstream (inferred)12

Neighbours seen next to AS25151 in public AS paths. These are not confirmed BGP sessions; peer IP addresses and locations are not published by these sources.

Public Peering Exchange Points (1)

IX Updates →
ExchangeLocationIPv4IPv6SpeedRS peerUpdated
AMS-IXAmsterdam, NL80.249.209.1552001:7f8:1::a502:5151:110GYes

IX ports registered by AS25151 (self-reported by the network).

Interconnection Facilities (2)

FacilityCityCountry
Equinix AM1/AM2 - Amsterdam, LuttenbergwegAmsterdamNetherlands
Global Switch AmsterdamAmsterdamNetherlands

Data centres where AS25151 says it can interconnect (self-reported).

IRR AS-SET and Peering Policy

IRR AS-SETNot available
Member of AS-SETsSee IRR page
Peering policyOpen
Multiple locationsNot Required
Ratio requirementNo
ContractNot Required
Traffic1-5Gbps
Traffic ratioMostly Outbound
Geographic scopeEurope
Max prefixes (IPv4 / IPv6)50 / 25
Unicast / IPv6 / MulticastYes / Yes / No
Looking glassNot available
Route serverNot available

Contact Information (0)

No public contacts are registered for AS25151.

Only contacts the network has chosen to publish are shown.

Upstreams (85)

View all →
ASNameRelationshipPathsLast Seen
AS3356LEVEL3 - Level 3 Parent, LLCUpstream (inferred)493
AS200020NBIP-AS Stichting NBIP-NaWasUpstream (inferred)77
AS1299TWELVE99 Arelion Sweden ABUpstream (inferred)58
AS2914NTT-DATA-2914 - NTT America, Inc.Upstream (inferred)53
AS58511ANYCAST-GLOBAL-BACKBONE - Anycast Global BackboneUpstream (inferred)16
AS30844LIQUID-AS Liquid Telecommunications LtdUpstream (inferred)15
AS37497Network Platforms (PTY) LTD - Network Platforms (PTY) LTDUpstream (inferred)12
AS49544i3Dnet i3D.net B.VUpstream (inferred)12
AS13030INIT7 Init7 (Switzerland) Ltd.Upstream (inferred)10
AS37468Angola Cables - Angola CablesUpstream (inferred)10
AS1031PEER1-1031 - PEER 1031 LLCUpstream (inferred)8
AS3216SOVAM-AS PJSC "Vimpelcom"Upstream (inferred)8

Downstreams (2)

ASNameRelationshipPathsLast Seen
AS15535—Downstream (inferred)Inferred—
AS210728—Downstream (inferred)Inferred—

Registry and network details

Registered holderCYSO-AS Cyso Group B.V.
RegisteredYes
Peering policyOpen
IRR AS-setNot available
Registry record last modified
MaintainersRIPE-NCC-END-MNT, CYSO-MNT
Internet exchanges1
Facilities2
Network profile updated

Data updated . See limitations.