AS203851 CSD Network Services Ltd

United Kingdom as_csd001 RIPE 5 IPv4 prefixes 0 IPv6 prefixes

IPv4 addresses

1,280

IPv6 /48 networks

RPKI

5 valid0 no ROA

Peers and downstreams

Holder

AS name: as_csd001
Description: CSD Network Services Ltd
Organisation: CSD Network Services Ltd
Registered in: Braintree, United Kingdom
Abuse contact: ripe@csd.co
Assigned: 2015-10-19
Registered: 2015-10-20
Record last changed: 2018-09-04 11:41 UTC

185.154.50.0/24 185.87.212.0/24 185.87.213.0/24 185.87.214.0/24 185.87.215.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade C · 70/100

pass	Prefixes covered by valid ROAs 5 of 5 announced prefixes are RPKI valid.	25/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
fail	Announces IPv6 No IPv6 prefixes are announced.	0/15
pass	More than one upstream 2 upstreams seen in BGP.	10/10
pass	Working abuse contact ripe@csd.co is published.	15/15
fail	Publishes a geofeed No geofeed found. Without one, location databases have to guess.	0/10
pass	No prefixes smaller than /24 or /48 All prefixes are /24 (IPv4) or /48 (IPv6) or larger.	10/10
fail	Registry record maintained Last changed 2018-09-04.	0/5

Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.

Show this on your website

HTML

<a href="https://ip-fd.net/asn/203851"><img src="https://ip-fd.net/badge/asn/203851/health.svg" alt="AS203851 network health on IP-FD.net"></a>

Markdown

[![AS203851 network health](https://ip-fd.net/badge/asn/203851/health.svg)](https://ip-fd.net/asn/203851)

Use rpki.svg instead of health.svg for the RPKI badge.

Routing changes

Last 30 days

2026-10-04 17:04 UTC	Neighbour gone	AS39351	upstream
2026-10-04 17:04 UTC	Neighbour gone	AS37282	upstream
2026-10-04 17:04 UTC	Neighbour gone	AS37100	upstream
2026-10-04 17:04 UTC	Neighbour gone	AS18106	peer
2026-10-04 17:04 UTC	Relationship changed	AS9044	upstream to peer
2026-10-04 17:04 UTC	Relationship changed	AS6204	upstream to peer
2026-10-04 17:04 UTC	New neighbour	AS6057	peer
2026-10-04 17:04 UTC	Relationship changed	AS60171	upstream to peer
2026-10-04 17:04 UTC	Relationship changed	AS5405	upstream to peer
2026-10-04 17:04 UTC	Relationship changed	AS48362	upstream to peer
2026-10-04 17:04 UTC	Relationship changed	AS37468	upstream to peer
2026-10-04 17:04 UTC	Relationship changed	AS35280	upstream to peer
2026-10-04 17:04 UTC	Relationship changed	AS34549	upstream to peer
2026-10-04 17:04 UTC	Relationship changed	AS34177	upstream to peer
2026-10-04 17:04 UTC	Relationship changed	AS29075	upstream to peer
2026-10-04 17:04 UTC	Relationship changed	AS25091	upstream to peer

WHOIS

aut-num:        AS203851
as-name:        as_csd001
org:            ORG-CL296-RIPE
admin-c:        TA5062-RIPE
tech-c:         TA5062-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         toma1-mnt
created:        2015-10-20T10:02:33Z
last-modified:  2018-09-04T11:41:01Z
source:         RIPE
% 4 routing policy lines (import/export) not shown

Routing data

Updated just now

Registry record

Fetched just now from RIPE

Prefixes and neighbours come from the RIPE RIS route collectors. Data older than 5 minutes is refreshed when this page is opened.

API

curl -H "X-API-Key: YOUR_KEY" https://ip-fd.net/api/v1/asn/203851

const res = await fetch('https://ip-fd.net/api/v1/asn/203851', {
  headers: { 'X-API-Key': 'YOUR_KEY' }
});
const data = await res.json();
console.log(data);

import requests

r = requests.get('https://ip-fd.net/api/v1/asn/203851', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/203851');
curl_setopt($ch, CURLOPT_HTTPHEADER, ['X-API-Key: YOUR_KEY']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = json_decode(curl_exec($ch), true);
print_r($data);

req, _ := http.NewRequest("GET", "https://ip-fd.net/api/v1/asn/203851", nil)
req.Header.Set("X-API-Key", "YOUR_KEY")
res, err := http.DefaultClient.Do(req)
if err != nil {
    log.Fatal(err)
}
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

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