AS42908 O2 Czech Republic, a.s.

Czechia CZ-NORDICTELECOMREGIONAL RIPE 35 IPv4 prefixes 9 IPv6 prefixes

IPv4 addresses

183,296

IPv6 /48 networks

2,424,832

RPKI

44 valid0 no ROA

Peers and downstreams

Holder

AS name: CZ-NORDICTELECOMREGIONAL
Description: ORIGINAL AS CZ-NORDICTELECOMREGIONAL
Organisation: O2 Czech Republic, a.s.
Abuse contact: abuse@o2.cz
Assigned: 2007-05-08
Registered: 2007-05-09
Record last changed: 2025-04-01 07:33 UTC

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade B · 85/100

pass	Prefixes covered by valid ROAs 44 of 44 announced prefixes are RPKI valid.	25/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 9 IPv6 prefixes.	15/15
partly	More than one upstream 1 upstream seen in BGP.	5/10
pass	Working abuse contact abuse@o2.cz 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
pass	Registry record maintained Last changed 2025-04-01.	5/5

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/42908"><img src="https://ip-fd.net/badge/asn/42908/health.svg" alt="AS42908 network health on IP-FD.net"></a>

Markdown

[![AS42908 network health](https://ip-fd.net/badge/asn/42908/health.svg)](https://ip-fd.net/asn/42908)

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

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:        AS42908
admin-c:        VAKO1-RIPE
tech-c:         CZO2-RIPE
descr:          ORIGINAL AS CZ-NORDICTELECOMREGIONAL
as-name:        CZ-NORDICTELECOMREGIONAL
org:            ORG-STaN1-RIPE
remarks:        
remarks:        
remarks:        
remarks:        
remarks:        
remarks:        
remarks:        
remarks:        
remarks:        
remarks:        
remarks:        
remarks:        
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         AS5610-MTN
created:        2007-05-09T09:21:42Z
last-modified:  2025-04-01T07:33:41Z
source:         RIPE
% 18 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/42908

const res = await fetch('https://ip-fd.net/api/v1/asn/42908', {
  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/42908', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/42908');
curl_setopt($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/42908", 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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