Autonomous system profile

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

AS39563

Announcement observedRIPE NCC

CTA Systems B.V. · UCSYSTEMS

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

Last active10/21/2026, 18:54:07Snapshot expired

View network topology RDAP registration

ASN: AS39563
Registration country: Netherlands
Name: CTA Systems B.V.
Abbreviation: UCSYSTEMS
Registration date: 11/10/2017, 15:15:11
Status: Announcement observed
RIR: RIPE NCC

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
185.231.16.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 00:00:00	10/21/2026, 08:00:00	✓	×	Currently valid
185.231.17.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 00:00:00	10/21/2026, 08:00:00	✓	×	Currently valid
185.231.18.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 00:00:00	10/21/2026, 08:00:00	✓	×	Currently valid
185.231.19.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 00:00:00	10/21/2026, 08:00:00	✓	×	Currently valid
185.80.10.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 00:00:00	10/21/2026, 08:00:00	✓	×	Currently valid
185.80.11.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 00:00:00	10/21/2026, 08:00:00	✓	×	Currently valid
185.80.8.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 00:00:00	10/21/2026, 08:00:00	✓	×	Currently valid
185.80.9.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 00:00:00	10/21/2026, 08:00:00	✓	×	Currently valid
85.8.131.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 00:00:00	10/21/2026, 08:00:00	✓	×	Currently valid

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

Registration and sources

Organization: CTA Systems B.V.
RIR: RIPE NCC
Registration country: Netherlands
Registration date: 11/10/2017, 15:15:11
Abuse contact: abuse@ucsystems.nl

Snapshot trend

10/21/2026, 18:54:079 v41 v625 Upstream · 20 Uncertain

10/20/2026, 04:56:119 v41 v640 Upstream · 49 Uncertain

10/16/2026, 00:20:339 v41 v639 Upstream · 49 Uncertain

10/12/2026, 02:29:519 v41 v641 Upstream · 47 Uncertain

10/5/2026, 06:00:259 v41 v639 Upstream · 47 Uncertain

10/3/2026, 06:44:569 v41 v640 Upstream · 47 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