AS203208 Ctu_As4_2

Czechia CTU_AS4_2 RIPE 2 IPv4 prefixes 3 IPv6 prefixes

IPv4 addresses

768

IPv6 /48 networks

458,752

RPKI

0 valid5 no ROA

Peers and downstreams

Holder

AS name: CTU_AS4_2
Description: Czech Telecommunication Office
Organisation: Czech Telecommunication Office
Registered in: Prague, Czechia
Abuse contact: schmieds@ctu.cz
Assigned: 2016-03-07
Registered: 2016-03-08
Record last changed: 2025-07-04 09:55 UTC

185.68.212.0/23 185.68.214.0/24

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:        AS203208
as-name:        CTU_AS4_2
org:            ORG-CTO1-RIPE
admin-c:        SS41216-RIPE
tech-c:         JK16414-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         SUPER-CTU
created:        2016-03-08T14:32:58Z
last-modified:  2025-07-04T09:55:24Z
source:         RIPE
% 4 routing policy lines (import/export) not shown

Routing data

Updated just now

Registry record

Fetched just now from RIPE

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/203208

const res = await fetch('https://ip-fd.net/api/v1/asn/203208', {
  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/203208', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/203208');
curl_setopt($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/203208", 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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