AS42237 w1n ltd

United Kingdom w1n RIPE 7 IPv4 prefixes 12 IPv6 prefixes

IPv4 addresses

1,792

IPv6 /48 networks

1,245,184

RPKI

19 valid0 no ROA

Peers and downstreams

Holder

AS name: w1n
Description: w1n ltd
Organisation: w1n ltd
Registered in: Doncaster, United Kingdom
Abuse contact: abuse@w1n.nl
Assigned: 2017-08-09
Registered: 2017-08-10
Record last changed: 2026-08-18 15:39 UTC

185.217.0.0/24 185.217.1.0/24 185.246.128.0/24 185.246.129.0/24 185.246.130.0/24 193.105.134.0/24 91.236.116.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade A · 90/100

pass	Prefixes covered by valid ROAs 19 of 19 announced prefixes are RPKI valid.	25/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 12 IPv6 prefixes.	15/15
pass	More than one upstream 2 upstreams seen in BGP.	10/10
pass	Working abuse contact abuse@w1n.nl 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 2026-08-18.	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/42237"><img src="https://ip-fd.net/badge/asn/42237/health.svg" alt="AS42237 network health on IP-FD.net"></a>

Markdown

[![AS42237 network health](https://ip-fd.net/badge/asn/42237/health.svg)](https://ip-fd.net/asn/42237)

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

Routing changes

Last 30 days

2026-10-04 10:57 UTC	New neighbour	AS50304	peer
2026-10-04 10:57 UTC	Relationship changed	AS39351	upstream to peer
2026-10-04 10:57 UTC	Relationship changed	AS31500	upstream to peer
2026-10-04 10:57 UTC	Relationship changed	AS24482	upstream to peer
2026-10-04 10:57 UTC	Relationship changed	AS20473	upstream to peer
2026-10-04 10:57 UTC	New prefix	2a13:80::/32
2026-10-04 10:57 UTC	New prefix	2a10:e0c0::/29

WHOIS

aut-num:        AS42237
as-name:        w1n
org:            ORG-WL303-RIPE
admin-c:        AA39751-RIPE
tech-c:         AA39751-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         lir-uk-win-1-MNT
created:        2017-08-10T12:53:05Z
last-modified:  2026-08-18T15:39:16Z
source:         RIPE
% 2 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/42237

const res = await fetch('https://ip-fd.net/api/v1/asn/42237', {
  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/42237', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/42237');
curl_setopt($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/42237", 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.

AS3399	Obenet AB OBE-NET
AS6939	Hurricane Electric LLC HURRICANE

AS20473	The Constant Company, LLC AS-VULTR
AS24482	SG.GS SGGS-AS-AP
AS31500	Global Network Management Inc GNM-AS
AS35598	INETCOM CARRIER LLC INETCOM
AS39351	31173 Services AB ESAB-AS
AS50304	Blix Solutions AS BLIX