AS201042 SD1-Telecom SRL

Belgium SD1-Telecom RIPE 7 IPv4 prefixes 1 IPv6 prefix

IPv4 addresses

1,792

IPv6 /48 networks

524,288

RPKI

2 valid6 no ROA

Peers and downstreams

Holder

AS name: SD1-Telecom
Description: SD1-Telecom SRL
Organisation: SD1-Telecom SRL
Registered in: Braine-l'Alleud, Belgium
Abuse contact: helpdesk@sd1.be
Assigned: 2022-11-29
Registered: 2022-11-30
Record last changed: 2025-08-07 17:01 UTC

154.52.36.0/24 154.52.49.0/24 154.52.51.0/24 154.52.52.0/24 154.52.53.0/24 194.13.142.0/24 81.2.148.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade C · 71/100

partly	Prefixes covered by valid ROAs 2 of 8 announced prefixes are RPKI valid, 6 have no ROA.	6/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 1 IPv6 prefix.	15/15
pass	More than one upstream 3 upstreams seen in BGP.	10/10
pass	Working abuse contact helpdesk@sd1.be 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
pass	Registry record maintained Last changed 2025-08-07.	5/5

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/201042"><img src="https://ip-fd.net/badge/asn/201042/health.svg" alt="AS201042 network health on IP-FD.net"></a>

Markdown

[![AS201042 network health](https://ip-fd.net/badge/asn/201042/health.svg)](https://ip-fd.net/asn/201042)

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

Routing changes

Last 30 days

2026-10-04 23:11 UTC

New prefix

154.52.53.0/24

WHOIS

aut-num:        AS201042
as-name:        SD1-Telecom
remarks:        ==============================
remarks:        UPSTREAMS
remarks:        ==============================
remarks:        ==============================
remarks:        Routing Policy
remarks:        ==============================
remarks:        We deny prefixes longer than /24 (IPv4) and /48 (IPv6) on all our
remarks:        BGP sessions. We also filter default routes and bogus networks
remarks:        (RFC1918, RFC5735, Former Class D/E, documentation prefix, 6bone,
remarks:        etc...)
remarks:        ==============================
org:            ORG-SS1287-RIPE
admin-c:        RM22750-RIPE
tech-c:         RM22750-RIPE
tech-c:         MA631-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         SD1TEL-MNT
created:        2022-11-30T08:24:43Z
last-modified:  2025-08-07T17:01:48Z
source:         RIPE
% 8 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/201042

const res = await fetch('https://ip-fd.net/api/v1/asn/201042', {
  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/201042', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/201042');
curl_setopt($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/201042", 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))

Works without a key at a lower rate. Get a free key.

AS174
AS1299	Arelion Sweden AB TWELVE99
AS29467	LUXNETWORK S.A. LuxNetwork