AS211251 A1 Internet BV

Netherlands A1-DC RIPE 12 IPv4 prefixes 0 IPv6 prefixes

IPv4 addresses

3,584

IPv6 /48 networks

RPKI

12 valid0 no ROA

Peers and downstreams

Holder

AS name: A1-DC
Description: A1 Internet BV
Organisation: A1 Internet BV
Registered in: Heerenveen, Netherlands
Abuse contact: harry@a1.nl
Assigned: 2021-05-27
Registered: 2021-05-28
Record last changed: 2024-10-09 15:31 UTC

213.171.64.0/23 213.171.66.0/23 213.171.67.0/24 213.171.68.0/23 213.171.72.0/24 213.171.73.0/24 213.171.74.0/24 213.171.75.0/24 79.98.176.0/24 79.98.177.0/24 79.98.179.0/24 91.142.132.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade B · 75/100

pass	Prefixes covered by valid ROAs 12 of 12 announced prefixes are RPKI valid.	25/25
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 3 upstreams seen in BGP.	10/10
pass	Working abuse contact harry@a1.nl 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 2024-10-09.	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/211251"><img src="https://ip-fd.net/badge/asn/211251/health.svg" alt="AS211251 network health on IP-FD.net"></a>

Markdown

[![AS211251 network health](https://ip-fd.net/badge/asn/211251/health.svg)](https://ip-fd.net/asn/211251)

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

Routing changes

Last 30 days

2026-10-05 16:56 UTC	Neighbour gone	AS263444	upstream
2026-10-05 16:56 UTC	Neighbour gone	AS212635	peer
2026-10-05 16:56 UTC	Neighbour gone	AS212483	peer
2026-10-05 16:56 UTC	Neighbour gone	AS209823	peer
2026-10-05 16:56 UTC	Neighbour gone	AS199524	peer
2026-10-05 16:56 UTC	Neighbour gone	AS198150	peer
2026-10-05 16:56 UTC	Neighbour gone	AS62000	upstream
2026-10-05 16:56 UTC	Neighbour gone	AS61049	upstream
2026-10-05 16:56 UTC	Neighbour gone	AS58299	peer
2026-10-05 16:56 UTC	Neighbour gone	AS51088	peer
2026-10-05 16:56 UTC	Neighbour gone	AS50869	upstream
2026-10-05 16:56 UTC	Neighbour gone	AS50629	peer
2026-10-05 16:56 UTC	Neighbour gone	AS49544	peer
2026-10-05 16:56 UTC	Neighbour gone	AS39351	upstream
2026-10-05 16:56 UTC	Neighbour gone	AS39122	peer
2026-10-05 16:56 UTC	Neighbour gone	AS37721	peer
2026-10-05 16:56 UTC	Neighbour gone	AS34927	peer
2026-10-05 16:56 UTC	Neighbour gone	AS34019	upstream
2026-10-05 16:56 UTC	Neighbour gone	AS29075	peer
2026-10-05 16:56 UTC	Neighbour gone	AS25091	upstream
2026-10-05 16:56 UTC	Neighbour gone	AS24482	peer
2026-10-05 16:56 UTC	Neighbour gone	AS20766	upstream
2026-10-05 16:56 UTC	Neighbour gone	AS20764	upstream
2026-10-05 16:56 UTC	Neighbour gone	AS20326	upstream
2026-10-05 16:56 UTC	Neighbour gone	AS14840	upstream
2026-10-05 16:56 UTC	Neighbour gone	AS12859	peer
2026-10-05 16:56 UTC	Neighbour gone	AS9498	upstream
2026-10-05 16:56 UTC	Neighbour gone	AS8298	peer
2026-10-05 16:56 UTC	Neighbour gone	AS6939	upstream
2026-10-05 16:56 UTC	Neighbour gone	AS6204	upstream
2026-10-05 16:56 UTC	Neighbour gone	AS5405	upstream
2026-10-05 16:56 UTC	Neighbour gone	AS3399	peer
2026-10-05 16:56 UTC	Neighbour gone	AS3214	upstream
2026-10-05 16:56 UTC	Neighbour gone	AS1103	upstream
2026-10-05 16:56 UTC	New neighbour	AS203966	downstream
2026-10-05 16:56 UTC	New neighbour	AS44854	upstream

WHOIS

aut-num:        AS211251
as-name:        A1-DC
org:            ORG-BoLB1-RIPE
admin-c:        JJ4842-RIPE
tech-c:         jj4842-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         A1-LIR-MNT
created:        2021-05-28T08:57:35Z
last-modified:  2024-10-09T15:31:15Z
source:         RIPE
% 6 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/211251

const res = await fetch('https://ip-fd.net/api/v1/asn/211251', {
  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/211251', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/211251');
curl_setopt($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/211251", 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.

AS6424	EDGOO NETWORKS UNIPESSOAL LDA EDGOO
AS44854	Eritap ERITAP-AS
AS57866	Fusix Networks B.V. FUSIX-AS