Autonomous system profile

Review registration details, announced prefixes, network relationships and historical snapshots.

AS25151

Announcement observedRIPE NCC

CYSO-AS Cyso Group B.V. · CYSO-AS

This profile is assembled from CHA.LA's normalized registration, routing and observation snapshots.

Last active10/22/2026, 19:36:37Snapshot expired

View network topology RDAP registration

ASN: AS25151
Registration country: Netherlands
Name: CYSO-AS Cyso Group B.V.
Abbreviation: CYSO-AS
Registration date: 9/16/2002, 13:40:41
Status: Announcement observed
RIR: RIPE NCC

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
109.235.72.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
130.193.5.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
185.123.55.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
185.54.112.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
193.33.220.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
2.57.56.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
37.46.136.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
37.46.140.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	10/13/2026, 00:00:00	10/13/2026, 08:00:00	✓	×	Historical record
37.72.138.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
45.134.223.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
62.129.139.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
62.129.149.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
80.85.160.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
80.85.160.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/25/2026, 16:00:00	9/25/2026, 16:00:00	✓	×	Historical record
81.24.0.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
85.158.200.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
93.94.224.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/19/2026, 00:00:00	✓	×	Currently valid

BGP prefixes have no geographic country; the column is marked not applicable.

Registration and sources

Organization: CYSO-AS Cyso Group B.V.
RIR: RIPE NCC
Registration country: Netherlands
Registration date: 9/16/2002, 13:40:41
Abuse contact: abuse@cyso.net

Snapshot trend

10/22/2026, 19:36:3716 v43 v635 Upstream · 24 Uncertain

10/19/2026, 06:01:3716 v43 v655 Upstream · 51 Uncertain

10/1/2026, 17:28:2716 v43 v651 Upstream · 50 Uncertain

ASN route snapshotThis page reads collected ASN, prefix, relationship and history data. External interfaces are used for initial collection and scheduled refreshes.Source keys: cha-la-external-routing · rir-rdap-asn · iana-rdap-asn-bootstrap