AS20510 Nexum Hungary Internet Service Provider Ltd.

Hungary Nexum-AS RIPE 6 IPv4 prefixes 0 IPv6 prefixes

IPv4 addresses

7,424

IPv6 /48 networks

RPKI

5 valid1 no ROA

Peers and downstreams

Holder

AS name: Nexum-AS
Description: Hungary
Organisation: Nexum Hungary Internet Service Provider Ltd.
Registered in: Szeged, Hungary
Abuse contact: lir@nexum.hu
Assigned: 2001-03-15
Registered: 2001-12-06
Record last changed: 2026-07-02 20:53 UTC

213.157.112.0/22 213.157.116.0/23 213.157.118.0/23 213.157.124.0/22 213.157.96.0/20 85.8.208.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade C · 71/100

partly	Prefixes covered by valid ROAs 5 of 6 announced prefixes are RPKI valid, 1 have no ROA.	21/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
fail	Announces IPv6 No IPv6 prefixes are announced.	0/15
pass	More than one upstream 2 upstreams seen in BGP.	10/10
pass	Working abuse contact lir@nexum.hu 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 2026-07-02.	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/20510"><img src="https://ip-fd.net/badge/asn/20510/health.svg" alt="AS20510 network health on IP-FD.net"></a>

Markdown

[![AS20510 network health](https://ip-fd.net/badge/asn/20510/health.svg)](https://ip-fd.net/asn/20510)

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

Routing changes

Last 30 days

2026-10-06 02:07 UTC	Relationship changed	AS6663	upstream to peer
2026-10-06 02:07 UTC	Relationship changed	AS47692	upstream to peer
2026-10-06 02:07 UTC	Relationship changed	AS15576	upstream to peer

WHOIS

aut-num:        AS20510
as-name:        Nexum-AS
descr:          Hungary
org:            ORG-MBL1-RIPE
admin-c:        AM3278-RIPE
tech-c:         AM3278-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         nexum-mnt
created:        2001-12-06T11:12:46Z
last-modified:  2026-07-02T20:53:25Z
source:         RIPE
% 7 routing policy lines (import/export) not shown

Routing data

Updated 7 h ago

Registry record

Fetched 7 h ago 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/20510

const res = await fetch('https://ip-fd.net/api/v1/asn/20510', {
  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/20510', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/20510');
curl_setopt($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/20510", 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.

AS6939	Hurricane Electric LLC HURRICANE
AS29278	Rackhost Zrt. RACKHOST-HU-AS

AS6663	Euroweb Romania S.R.L. TTI-NET
AS15576	NTS workspace AG NTS
AS40994	Hohl IT e.U. Alwyzon
AS47692	Nessus GmbH NESSUS
AS49544	i3D.net B.V i3Dnet