AS9631 youngsan university

South Korea YSU-AS-KR APNIC 37 IPv4 prefixes 0 IPv6 prefixes

IPv4 addresses

8,512

IPv6 /48 networks

RPKI

0 valid37 no ROA

Peers and downstreams

Holder

AS name: YSU-AS-KR
Description: youngsan university
Organisation: youngsan university
Abuse contact: Not published
Assigned: 1999-08-17

Routing changes

Last 30 days

2026-10-04 06:47 UTC	New prefix	221.164.4.48/28
2026-10-04 06:47 UTC	New prefix	221.164.4.16/28
2026-10-04 06:47 UTC	New prefix	221.164.4.0/28
2026-10-04 06:47 UTC	New prefix	221.164.4.32/28

WHOIS

aut-num:        AS9631
as-name:        YSU-AS-KR-KR
handle:         AS9631
remarks:        youngsan university
administrative,technical:KE5005-KR (AS Manager) <ejkim@ysu.ac.kr>
abuse:          IRT-KRNIC-KR (IRT-KRNIC-KR) <hostmaster@nic.or.kr>
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/9631

const res = await fetch('https://ip-fd.net/api/v1/asn/9631', {
  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/9631', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/9631');
curl_setopt($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/9631", 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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