Autonomous system profile

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

AS203851

Announcement observedRIPE NCC

CSD Network Services Ltd · as_csd001

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

Last active10/10/2026, 16:24:29Snapshot expired

View network topology RDAP registration

ASN: AS203851
Registration country: United Kingdom
Name: CSD Network Services Ltd
Abbreviation: as_csd001
Registration date: 10/20/2015, 10:02:33
Status: Announcement observed
RIR: RIPE NCC

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
185.154.50.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/26/2026, 08:00:00	10/10/2026, 08:00:00	✓	×	Currently valid
185.87.212.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/26/2026, 08:00:00	10/10/2026, 08:00:00	✓	×	Currently valid
185.87.213.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/26/2026, 08:00:00	10/10/2026, 08:00:00	✓	×	Currently valid
185.87.214.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/26/2026, 08:00:00	10/10/2026, 08:00:00	✓	×	Currently valid
185.87.215.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/26/2026, 08:00:00	10/10/2026, 08:00:00	✓	×	Currently valid

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

Registration and sources

Organization: CSD Network Services Ltd
RIR: RIPE NCC
Registration country: United Kingdom
Registration date: 10/20/2015, 10:02:33
Abuse contact: ripe@csd.co

Snapshot trend

10/10/2026, 16:24:295 v40 v615 Upstream · 29 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