AS24252 Japan Registry Service Co., Ltd.

Japan JPRS-NAYUTA APNIC 1 IPv4 prefix 1 IPv6 prefix

IPv4 addresses

256

IPv6 /48 networks

65,536

RPKI

0 valid2 no ROA

Peers and downstreams

Holder

AS name: JPRS-NAYUTA
Description: Japan Registry Service Co., Ltd. Chiyoda First Bldg. East 13F, 3-8-1 Nishi-Kanda Chiyoda-ku,Tokyo,101-0065,Japa
Organisation: Japan Registry Service Co., Ltd.
Abuse contact: Not published
Assigned: 2004-10-18
Record last changed: 2025-08-14 22:14 UTC

203.119.40.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade C · 65/100

fail	Prefixes covered by valid ROAs 0 of 2 announced prefixes are RPKI valid, 2 have no ROA.	0/25
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 hostmaster@nic.ad.jp 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 2025-08-14.	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/24252"><img src="https://ip-fd.net/badge/asn/24252/health.svg" alt="AS24252 network health on IP-FD.net"></a>

Markdown

[![AS24252 network health](https://ip-fd.net/badge/asn/24252/health.svg)](https://ip-fd.net/asn/24252)

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

Routing changes

Last 30 days

2026-10-05 05:46 UTC	Relationship changed	AS8966	upstream to peer
2026-10-05 05:46 UTC	Relationship changed	AS8220	upstream to peer
2026-10-05 05:46 UTC	Relationship changed	AS2518	upstream to peer
2026-10-05 05:46 UTC	Relationship changed	AS20485	upstream to peer

WHOIS

aut-num:        AS24252
as-name:        JPRS-NAYUTA
handle:         AS24252
remarks:        Japan Registry Service Co., Ltd.
technical,administrative:JNIC1-AP (Japan Network Information Center) <hostmaster@nic.ad.jp>
technical,administrative:JP00275301
abuse:          IRT-JPNIC-JP (IRT-JPNIC-JP) <hostmaster@nic.ad.jp>
last changed:   2025-08-14T22:14:04Z
source:         APNIC (RDAP)

Routing data

Updated just now

Registry record

Fetched just now from APNIC 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/24252

const res = await fetch('https://ip-fd.net/api/v1/asn/24252', {
  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/24252', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/24252');
curl_setopt($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/24252", 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.

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AS8966	EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC Etisalat-AS
AS9002	RETN Limited RETN-AS
AS17639	Converge ICT Solutions Inc. CONVERGE-AS
AS20485	Joint Stock Company TransTeleCom TRANSTELECOM
AS24482	SG.GS SGGS-AS-AP
AS25152	Reseaux IP Europeens Network Coordination Centre (RIPE NCC) K-ROOT-SERVER
AS45489	Sri Lanka Telecom PLC, GLobal Peering SLT-GLOBAL
AS49544	i3D.net B.V i3Dnet