AS21396 NetConnex Broadband Ltd.

United Kingdom NETCONNEX RIPE 9 IPv4 prefixes 4 IPv6 prefixes

IPv4 addresses

11,008

IPv6 /48 networks

1,048,577

RPKI

11 valid2 no ROA

Peers and downstreams

Holder

AS name: NETCONNEX
Description: NetConnex Broadband Ltd.
Organisation: NetConnex Broadband Ltd.
Registered in: Epsom, United Kingdom
Abuse contact: abuse@ncuk.net
Assigned: 2001-11-26
Registered: 2002-09-17
Record last changed: 2026-09-09 09:14 UTC

141.0.208.0/20 193.203.210.0/23 193.223.78.0/24 194.117.248.0/23 194.180.187.0/24 5.182.220.0/22 5.182.220.0/24 77.95.218.0/24 80.249.96.0/20

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade B · 86/100

partly	Prefixes covered by valid ROAs 11 of 13 announced prefixes are RPKI valid, 2 have no ROA.	21/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 4 IPv6 prefixes.	15/15
pass	More than one upstream 5 upstreams seen in BGP.	10/10
pass	Working abuse contact abuse@ncuk.net 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 2026-09-09.	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/21396"><img src="https://ip-fd.net/badge/asn/21396/health.svg" alt="AS21396 network health on IP-FD.net"></a>

Markdown

[![AS21396 network health](https://ip-fd.net/badge/asn/21396/health.svg)](https://ip-fd.net/asn/21396)

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

Routing changes

Last 30 days

2026-10-04 23:12 UTC	Neighbour gone	AS39351	upstream
2026-10-04 23:12 UTC	Relationship changed	AS9505	upstream to peer
2026-10-04 23:12 UTC	Relationship changed	AS9044	upstream to peer
2026-10-04 23:12 UTC	Relationship changed	AS8966	upstream to peer
2026-10-04 23:12 UTC	Relationship changed	AS8943	upstream to peer
2026-10-04 23:12 UTC	Relationship changed	AS60171	upstream to peer
2026-10-04 23:12 UTC	Relationship changed	AS4637	upstream to peer
2026-10-04 23:12 UTC	Relationship changed	AS42708	upstream to peer
2026-10-04 23:12 UTC	Relationship changed	AS41327	upstream to peer
2026-10-04 23:12 UTC	Relationship changed	AS3741	upstream to peer
2026-10-04 23:12 UTC	Relationship changed	AS37271	upstream to peer
2026-10-04 23:12 UTC	Relationship changed	AS37100	upstream to peer
2026-10-04 23:12 UTC	Relationship changed	AS33891	upstream to peer
2026-10-04 23:12 UTC	Relationship changed	AS29169	upstream to peer
2026-10-04 23:12 UTC	Relationship changed	AS21215	upstream to peer
2026-10-04 23:12 UTC	Relationship changed	AS20562	upstream to peer
2026-10-04 23:12 UTC	New neighbour	AS15830	peer
2026-10-04 23:12 UTC	Relationship changed	AS13030	upstream to peer
2026-10-04 23:12 UTC	Relationship changed	AS1267	upstream to peer
2026-10-04 23:12 UTC	Relationship changed	AS12552	upstream to peer

WHOIS

aut-num:        AS21396
org:            ORG-NBL2-RIPE
as-name:        NETCONNEX
descr:          NetConnex Broadband Ltd.
remarks:        London, UK
admin-c:        SL
tech-c:         NCHM-RIPE
status:         ASSIGNED
mnt-by:         NETCONNEX-MNT
mnt-by:         RIPE-NCC-END-MNT
created:        2002-09-17T08:57:43Z
last-modified:  2026-09-09T09:14:23Z
source:         RIPE
% 421 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/21396

const res = await fetch('https://ip-fd.net/api/v1/asn/21396', {
  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/21396', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/21396');
curl_setopt($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/21396", 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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