AS213959 ObSimRef Diensten B.V. trading as AltStack

Netherlands AltStack RIPE 2 IPv4 prefixes 1 IPv6 prefix

IPv4 addresses

512

IPv6 /48 networks

RPKI

3 valid0 no ROA

Peers and downstreams

Holder

AS name: AltStack
Description: ObSimRef Diensten B.V. trading as AltStack
Organisation: ObSimRef Diensten B.V. trading as AltStack
Registered in: Enschede, Netherlands
Abuse contact: abuse@0x4f.eu
Assigned: 2024-10-24
Registered: 2024-10-25
Record last changed: 2026-09-03 07:51 UTC

157.173.74.0/24 185.104.131.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade A · 100/100

pass	Prefixes covered by valid ROAs 3 of 3 announced prefixes are RPKI valid.	25/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 1 IPv6 prefix.	15/15
pass	More than one upstream 3 upstreams seen in BGP.	10/10
pass	Working abuse contact abuse@0x4f.eu is published.	15/15
pass	Publishes a geofeed A geofeed (RFC 8805) tells where the address space is used.	10/10
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 2026-09-03.	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/213959"><img src="https://ip-fd.net/badge/asn/213959/health.svg" alt="AS213959 network health on IP-FD.net"></a>

Markdown

[![AS213959 network health](https://ip-fd.net/badge/asn/213959/health.svg)](https://ip-fd.net/asn/213959)

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

Routing changes

Last 30 days

2026-10-05 01:32 UTC	Neighbour gone	AS58299	peer
2026-10-05 01:32 UTC	Neighbour gone	AS50869	upstream
2026-10-05 01:32 UTC	Neighbour gone	AS50629	peer
2026-10-05 01:32 UTC	Neighbour gone	AS41051	upstream
2026-10-05 01:32 UTC	New neighbour	AS28917	peer
2026-10-05 01:32 UTC	New neighbour	AS271253	peer
2026-10-05 01:32 UTC	Relationship changed	AS8298	upstream to peer
2026-10-05 01:32 UTC	Relationship changed	AS5405	upstream to peer
2026-10-05 01:32 UTC	Relationship changed	AS39351	upstream to peer
2026-10-05 01:32 UTC	Relationship changed	AS34019	upstream to peer
2026-10-05 01:32 UTC	Relationship changed	AS25091	upstream to peer
2026-10-05 01:32 UTC	Relationship changed	AS20766	upstream to peer
2026-10-05 01:32 UTC	New prefix	157.173.74.0/24

WHOIS

aut-num:        AS213959
as-name:        AltStack
org:            ORG-AA3486-RIPE
sponsoring-org: ORG-SB378-RIPE
admin-c:        FO40-RIPE
tech-c:         FO40-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         OSRD-MNT
created:        2024-10-25T08:41:44Z
last-modified:  2026-09-03T07:51:19Z
source:         RIPE
% 4 routing policy lines (import/export) not shown

Routing data

Updated 20 h ago

Registry record

Fetched 20 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/213959

const res = await fetch('https://ip-fd.net/api/v1/asn/213959', {
  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/213959', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/213959');
curl_setopt($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/213959", 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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