77.75.72.0/21

CZ-SEZNAM-20070507 IPv4 Czechia ALLOCATED PA AS43037

Registration

RIPE

Range: 77.75.72.0 to 77.75.79.255
CIDR: 77.75.72.0/21
Addresses: 2,048
Net name: CZ-SEZNAM-20070507
Holder: Seznam.cz, a.s. ORG-SA508-RIPE
Status: ALLOCATED PA
Abuse contact: abuse@seznam.cz
Last updated: 2026-04-26

Routing

Covered by 77.75.72.0/23 from AS43037 Seznam.cz, a.s.. RPKI valid

More specific assignments

Range	Net name	Country
77.75.72.0 - 77.75.72.255	SEZNAM-CZ	CZ
77.75.73.0 - 77.75.73.255	CZ-SEZNAM-20070605	CZ
77.75.74.0 - 77.75.74.255	SEZNAM-CZ	CZ
77.75.75.0 - 77.75.75.255	SEZNAM-CZ	CZ
77.75.76.0 - 77.75.76.255	SEZNAM-CZ	CZ
77.75.77.0 - 77.75.77.255	SEZNAM-CZ	CZ
77.75.78.0 - 77.75.78.255	SEZNAM-CZ	CZ
77.75.79.0 - 77.75.79.255	SEZNAM-CZ	CZ

WHOIS

inetnum:        77.75.72.0 - 77.75.79.255
netname:        CZ-SEZNAM-20070507
country:        CZ
org:            ORG-SA508-RIPE
status:         ALLOCATED PA
source:         RIPE

organisation:   ORG-SA508-RIPE
org-name:       Seznam.cz, a.s.
country:        CZ

role:           abuse department
abuse-mailbox:  abuse@seznam.cz
nic-hdl:        AD10910-RIPE

Location of the first address

Czechia

Registry country

Report wrong location

API

curl -H "X-API-Key: YOUR_KEY" https://ip-fd.net/api/v1/network/77.75.72.0/21

const res = await fetch('https://ip-fd.net/api/v1/network/77.75.72.0/21', {
  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/network/77.75.72.0/21', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/network/77.75.72.0/21');
curl_setopt($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/network/77.75.72.0/21", 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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