AS208434 Martin Jahn

Germany JAHN RIPE 0 IPv4 prefixes 6 IPv6 prefixes

IPv4 addresses

IPv6 /48 networks

RPKI

5 valid1 no ROA

Peers and downstreams

Holder

AS name: JAHN
Description: Martin Jahn
Organisation: Martin Jahn
Registered in: Erlangen, Germany
Abuse contact: martin.jahn@nixxda.net
Assigned: 2019-08-04
Registered: 2019-08-05
Record last changed: 2026-01-16 16:06 UTC

None announced.

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade B · 86/100

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
pass	Announces IPv6 6 IPv6 prefixes.	15/15
pass	More than one upstream 3 upstreams seen in BGP.	10/10
pass	Working abuse contact martin.jahn@nixxda.net 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 2026-01-16.	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/208434"><img src="https://ip-fd.net/badge/asn/208434/health.svg" alt="AS208434 network health on IP-FD.net"></a>

Markdown

[![AS208434 network health](https://ip-fd.net/badge/asn/208434/health.svg)](https://ip-fd.net/asn/208434)

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

Routing changes

Last 30 days

2026-10-05 18:52 UTC	Neighbour gone	AS215628	peer
2026-10-05 18:52 UTC	Neighbour gone	AS50869	upstream
2026-10-05 18:52 UTC	Relationship changed	AS34019	upstream to peer
2026-10-05 18:52 UTC	Relationship changed	AS58057	upstream to peer
2026-10-05 18:52 UTC	Relationship changed	AS48646	upstream to peer
2026-10-05 18:52 UTC	New neighbour	AS398447	peer
2026-10-05 18:52 UTC	Relationship changed	AS39351	upstream to peer
2026-10-05 18:52 UTC	Relationship changed	AS29632	upstream to peer
2026-10-05 18:52 UTC	Relationship changed	AS29075	upstream to peer
2026-10-05 18:52 UTC	Relationship changed	AS211509	upstream to peer
2026-10-05 18:52 UTC	New neighbour	AS209090	peer
2026-10-05 18:52 UTC	Relationship changed	AS209022	upstream to peer
2026-10-05 18:52 UTC	Relationship changed	AS205103	upstream to peer

WHOIS

aut-num:        AS208434
as-name:        JAHN
org:            ORG-MJV1-RIPE
admin-c:        MJ83937-RIPE
tech-c:         MJ83937-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         nixxda-NOC
created:        2019-08-05T10:17:31Z
last-modified:  2026-01-16T16:06:01Z
source:         RIPE
sponsoring-org: ORG-PMTA6-RIPE
% 10 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/208434

const res = await fetch('https://ip-fd.net/api/v1/asn/208434', {
  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/208434', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/208434');
curl_setopt($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/208434", 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.

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AS51185	MainStreaming SpA MAINSTREAMING-AS
AS56987	ABACLOUDA SAS AS-ABACLOUDA
AS57821	Nonattached Network e.V. NONATTACHED-AS
AS58057	Securebit AG SECUREBIT
AS58299	Openfactory GmbH OPENFACTORY-AS
AS62167	Tismi BV Tismi
AS64475	Freifunk Frankfurt am Main e.V. FREIFUNK-FRANKFURT
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AS205103	Telegraph42 Management GmbH TELEGRAPH-AS
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AS209022	Tschajera Limited Tschajera-Limited
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