AS204028 Dolphin IT-Systeme e.K.

Germany DolphinIT RIPE 6 IPv4 prefixes 7 IPv6 prefixes

IPv4 addresses

1,280

IPv6 /48 networks

524,288

RPKI

13 valid0 no ROA

Peers and downstreams

Holder

AS name: DolphinIT
Description: Dolphin IT-Systeme e.K.
Organisation: Dolphin IT-Systeme e.K.
Registered in: Wuppertal, Germany
Abuse contact: abuse@dolphin-it.de
Assigned: 2015-09-09
Registered: 2015-09-10
Record last changed: 2026-02-12 23:03 UTC

185.118.196.0/22 185.118.196.0/24 185.118.197.0/24 185.118.198.0/24 185.118.199.0/24 213.170.142.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade A · 90/100

pass	Prefixes covered by valid ROAs 13 of 13 announced prefixes are RPKI valid.	25/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 7 IPv6 prefixes.	15/15
pass	More than one upstream 2 upstreams seen in BGP.	10/10
pass	Working abuse contact abuse@dolphin-it.de 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 2026-02-12.	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/204028"><img src="https://ip-fd.net/badge/asn/204028/health.svg" alt="AS204028 network health on IP-FD.net"></a>

Markdown

[![AS204028 network health](https://ip-fd.net/badge/asn/204028/health.svg)](https://ip-fd.net/asn/204028)

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:        AS204028
as-name:        DolphinIT
remarks:        https://dolphin-it.de/
org:            ORG-DIE3-RIPE
remarks:        ***********************************************************
remarks:        Commercial Uplink and Transit Partners
remarks:        ***********************************************************
remarks:        United-Peering.net
remarks:        Hurricane Electric
remarks:        Liberty Global Operations B.V.
remarks:        Vodafone GmbH
remarks:        Deutsche Telekom AG
remarks:        Voxility LLP
remarks:        ***********************************************************
remarks:        Direct- und Private-Peering Partners
remarks:        ***********************************************************
remarks:        WOODYNET
remarks:        PCH
remarks:        ***********************************************************
remarks:        Contacts
remarks:        ***********************************************************
admin-c:        OF1364-RIPE
tech-c:         KO1457-RIPE
remarks:        ***********************************************************
remarks:        For spam/abuse, please contact abuse@dolphin-it.de
remarks:        E-mails to the persons above will be IGNORED!
remarks:        ***********************************************************
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         DOLPHINIT-MNT
created:        2015-09-10T11:56:44Z
last-modified:  2026-02-12T23:03:45Z
source:         RIPE
% 40 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/204028

const res = await fetch('https://ip-fd.net/api/v1/asn/204028', {
  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/204028', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/204028');
curl_setopt($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/204028", 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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