Autonomous system profile

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

AS210728

Announcement observedRIPE NCC

Cyso Group B.V. · CYSO-AS-DE

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

Last active10/12/2026, 06:33:36Snapshot expired

View network topology RDAP registration

ASN: AS210728
Registration country: Netherlands
Name: Cyso Group B.V.
Abbreviation: CYSO-AS-DE
Registration date: 9/22/2021, 12:43:19
Status: Announcement observed
RIR: RIPE NCC

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
194.26.103.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 00:00:00	10/12/2026, 00:00:00	✓	×	Currently valid
213.173.39.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 00:00:00	10/12/2026, 00:00:00	✓	×	Currently valid
77.246.243.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 00:00:00	10/12/2026, 00:00:00	✓	×	Currently valid

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

Registration and sources

Organization: Cyso Group B.V.
RIR: RIPE NCC
Registration country: Netherlands
Registration date: 9/22/2021, 12:43:19
Abuse contact: abuse@cyso.net

Snapshot trend

10/12/2026, 06:33:363 v41 v654 Upstream · 60 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 · iana-rdap-asn-bootstrap · rir-rdap-asn