AS23600 Korea Internet Security Agency

South Korea GDNSKR-KR APNIC 17 IPv4 prefixes 5 IPv6 prefixes

IPv4 addresses

4,352

IPv6 /48 networks

RPKI

2 valid20 no ROA

Peers and downstreams

Holder

AS name: GDNSKR-KR
Description: Korea Internet Security Agency
Organisation: Korea Internet Security Agency
Abuse contact: Not published
Assigned: 2002-12-23

1.18.121.0/24 1.18.132.0/24 1.18.133.0/24 1.18.134.0/24 1.18.135.0/24 202.30.45.0/24 202.31.188.0/24 202.31.190.0/24 203.83.158.0/24 219.251.142.0/24 219.251.156.0/24 221.139.191.0/24 39.125.192.0/24 39.125.228.0/24 39.125.244.0/24 39.127.249.0/24 58.235.102.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade C · 65/100

partly	Prefixes covered by valid ROAs 2 of 22 announced prefixes are RPKI valid, 20 have no ROA.	2/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 5 IPv6 prefixes.	15/15
pass	More than one upstream 4 upstreams seen in BGP.	10/10
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.

Show this on your website

HTML

<a href="https://ip-fd.net/asn/23600"><img src="https://ip-fd.net/badge/asn/23600/health.svg" alt="AS23600 network health on IP-FD.net"></a>

Markdown

[![AS23600 network health](https://ip-fd.net/badge/asn/23600/health.svg)](https://ip-fd.net/asn/23600)

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

Routing changes

Last 30 days

2026-10-04 03:56 UTC

New prefix

1.18.121.0/24

WHOIS

aut-num:        AS23600
as-name:        GDNSKR-KR-KR
handle:         AS23600
remarks:        Korea Internet Security Agency
administrative,technical:A544-KR (AS Manager) <hostmaster@nic.or.kr>
abuse:          IRT-KRNIC-KR (IRT-KRNIC-KR) <hostmaster@nic.or.kr>
source:         APNIC (RDAP)

Routing data

Updated 1 days ago

Registry record

Fetched 1 days ago 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/23600

const res = await fetch('https://ip-fd.net/api/v1/asn/23600', {
  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/23600', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/23600');
curl_setopt($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/23600", 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.

AS4766	Korea Telecom KIXS-AS-KR-KR
AS8763	DENIC eG DENIC-AS
AS9318	SK Broadband Co Ltd SKB-AS-KR
AS9858	Korea Internet Security Agency KRNICNET-KR

AS14650	Nucleo de Inf. e Coord. do Ponto BR - NIC.BR AS14650
AS24151	China Internet Network Infomation Center CNNIC-CRITICAL-AP