AS131822 Korea National University of Transportation

South Korea KNUT-AS-KR APNIC 51 IPv4 prefixes 0 IPv6 prefixes

IPv4 addresses

13,056

IPv6 /48 networks

RPKI

0 valid51 no ROA

Peers and downstreams

Holder

AS name: KNUT-AS-KR
Description: Korea National University of Transportation
Organisation: Korea National University of Transportation
Abuse contact: Not published
Assigned: 2011-07-31

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade E · 42/100

fail	Prefixes covered by valid ROAs 0 of 51 announced prefixes are RPKI valid, 51 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.or.kr 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
n/a	Registry record maintained We have no change date for this record.

Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.

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HTML

<a href="https://ip-fd.net/asn/131822"><img src="https://ip-fd.net/badge/asn/131822/health.svg" alt="AS131822 network health on IP-FD.net"></a>

Markdown

[![AS131822 network health](https://ip-fd.net/badge/asn/131822/health.svg)](https://ip-fd.net/asn/131822)

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

Routing changes

Last 30 days

2026-10-04 14:31 UTC

Relationship changed

AS3786

upstream to peer

WHOIS

aut-num:        AS131822
as-name:        KNUT-AS-KR-KR
handle:         AS131822
remarks:        Korea National University of Transportation
administrative,technical:AM7602-KR (AS Manager) <yongs@ut.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/131822

const res = await fetch('https://ip-fd.net/api/v1/asn/131822', {
  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/131822', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/131822');
curl_setopt($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/131822", 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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