AS49101 CEZNET s.r.o.

Czechia KTCT-ASN RIPE 2 IPv4 prefixes 2 IPv6 prefixes

IPv4 addresses

16,384

IPv6 /48 networks

131,072

RPKI

4 valid0 no ROA

Peers and downstreams

Holder

AS name: KTCT-ASN
Description: CEZNET s.r.o.
Organisation: CEZNET s.r.o.
Abuse contact: dohled@ceznet.cz
Assigned: 2009-04-13
Registered: 2009-04-14
Record last changed: 2025-11-26 17:29 UTC

46.36.32.0/19 82.144.128.0/19

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:        AS49101
as-name:        KTCT-ASN
org:            ORG-TBS13-RIPE
admin-c:        CH13482-RIPE
tech-c:         CH13482-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         CEZNET-MNT
created:        2009-04-14T09:02:00Z
last-modified:  2025-11-26T17:29:38Z
source:         RIPE
% 20 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/49101

const res = await fetch('https://ip-fd.net/api/v1/asn/49101', {
  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/49101', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/49101');
curl_setopt($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/49101", 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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