AS23623 Chuo University

Japan CHUO-U APNIC 1 IPv4 prefix 0 IPv6 prefixes

IPv4 addresses

65,536

IPv6 /48 networks

RPKI

0 valid1 no ROA

Peers and downstreams

Holder

AS name: CHUO-U
Description: Chuo University 742-1 Higashi-Nakano Hachiouji-shi,Tokyo,JAPAN
Organisation: Chuo University
Abuse contact: Not published
Assigned: 2003-01-30
Record last changed: 2013-04-04 23:05 UTC

133.91.0.0/16

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade E · 40/100

fail	Prefixes covered by valid ROAs 0 of 1 announced prefixes are RPKI valid, 1 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
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
fail	Registry record maintained Last changed 2013-04-04.	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/23623"><img src="https://ip-fd.net/badge/asn/23623/health.svg" alt="AS23623 network health on IP-FD.net"></a>

Markdown

[![AS23623 network health](https://ip-fd.net/badge/asn/23623/health.svg)](https://ip-fd.net/asn/23623)

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

Routing changes

Last 30 days

No changes recorded in the last 30 days. Changes are recorded each time the routing data of this AS is refreshed. Get alerts in real time.

WHOIS

aut-num:        AS23623
as-name:        CHUO-U
handle:         AS23623
remarks:        Chuo University
technical,administrative:JNIC1-AP (Japan Network Information Center) <hostmaster@nic.ad.jp>
administrative: HH17619JP
abuse:          IRT-JPNIC-JP (IRT-JPNIC-JP) <hostmaster@nic.ad.jp>
technical:      KI3528JP
last changed:   2013-04-04T23:05:07Z
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/23623

const res = await fetch('https://ip-fd.net/api/v1/asn/23623', {
  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/23623', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/23623');
curl_setopt($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/23623", 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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