AS37540 Winrock Nigeria Limited

Nigeria WINROCK-NG AFRINIC 10 IPv4 prefixes 0 IPv6 prefixes

IPv4 addresses

1,536

IPv6 /48 networks

RPKI

0 valid10 no ROA

Peers and downstreams

Holder

AS name: WINROCK-NG
Description: Winrock Nigeria Ltd
Organisation: Winrock Nigeria Limited
Abuse contact: Not published
Assigned: 2012-12-20
Registered: 2012-12-21
Record last changed: 2019-03-25 10:44 UTC

102.220.44.0/23 102.220.44.0/24 102.220.45.0/24 41.207.248.0/22 41.207.248.0/23 41.207.248.0/24 41.207.249.0/24 41.207.250.0/23 41.207.250.0/24 41.207.251.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade F · 25/100

fail	Prefixes covered by valid ROAs 0 of 10 announced prefixes are RPKI valid, 10 have no ROA.	0/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
fail	Announces IPv6 No IPv6 prefixes are announced.	0/15
partly	More than one upstream 1 upstream seen in BGP.	5/10
fail	Working abuse contact No abuse contact is published in the registry.	0/15
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 2019-03-25.	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/37540"><img src="https://ip-fd.net/badge/asn/37540/health.svg" alt="AS37540 network health on IP-FD.net"></a>

Markdown

[![AS37540 network health](https://ip-fd.net/badge/asn/37540/health.svg)](https://ip-fd.net/asn/37540)

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

Routing changes

Last 30 days

2026-10-04 04:59 UTC	New neighbour	AS36872	downstream
2026-10-04 04:59 UTC	Relationship changed	AS36940	upstream to peer

WHOIS

aut-num:        AS37540
as-name:        ORG-WNL1-AFRINIC
handle:         AS37540
technical:      CC37-AFRINIC (Chike Chukwurah) <cchukwura@winrok.net>
administrative: OE5-AFRINIC (Onyeabo Ebenmelu) <admin@winrok.net>
registrant:     ORG-WNL1-AFRINIC (Winrock Nigeria Limited) <admin@winrok.net>
technical:      AO54-AFRINIC (Adewale Ogunkoya) <cchukwura@winrok.net>
registration:   2012-12-21T10:29:00Z
last changed:   2019-03-25T10:44:00Z
source:         AFRINIC (RDAP)

Routing data

Updated 1 days ago

Registry record

Fetched 1 days ago from AFRINIC RDAP

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/37540

const res = await fetch('https://ip-fd.net/api/v1/asn/37540', {
  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/37540', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/37540');
curl_setopt($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/37540", 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.

AS36872	Intercom Data Network Limited
AS37472	Nigerian Communications Satellite Ltd
AS329199	STL FIBERCO LTD