AS51265 Mass Response Service GmbH

Austria MASSRESPONSE-AS RIPE 27 IPv4 prefixes 3 IPv6 prefixes

IPv4 addresses

52,992

IPv6 /48 networks

524,288

RPKI

30 valid0 no ROA

Peers and downstreams

Holder

AS name: MASSRESPONSE-AS
Description: Mass Response Service GmbH DC Tower 1, 38. Stock Donau-City-Stra�e 7, 1220 Wien ======================================================================
Organisation: Mass Response Service GmbH
Registered in: Vienna, Austria
Abuse contact: abuse@massresponse.com
Assigned: 2010-07-05
Registered: 2010-07-06
Record last changed: 2026-06-22 09:16 UTC

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Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade A · 100/100

pass	Prefixes covered by valid ROAs 30 of 30 announced prefixes are RPKI valid.	25/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 3 IPv6 prefixes.	15/15
pass	More than one upstream 5 upstreams seen in BGP.	10/10
pass	Working abuse contact abuse@massresponse.com 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 2026-06-22.	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/51265"><img src="https://ip-fd.net/badge/asn/51265/health.svg" alt="AS51265 network health on IP-FD.net"></a>

Markdown

[![AS51265 network health](https://ip-fd.net/badge/asn/51265/health.svg)](https://ip-fd.net/asn/51265)

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

Routing changes

Last 30 days

2026-10-04 23:05 UTC	Neighbour gone	AS137409	upstream
2026-10-04 23:05 UTC	Neighbour gone	AS39351	upstream
2026-10-04 23:05 UTC	Neighbour gone	AS37282	upstream
2026-10-04 23:05 UTC	New neighbour	AS59919	peer
2026-10-04 23:05 UTC	New neighbour	AS57111	peer
2026-10-04 23:05 UTC	New neighbour	AS5394	peer
2026-10-04 23:05 UTC	New neighbour	AS5392	peer
2026-10-04 23:05 UTC	New neighbour	AS50877	peer
2026-10-04 23:05 UTC	New neighbour	AS49605	peer
2026-10-04 23:05 UTC	New neighbour	AS28917	peer
2026-10-04 23:05 UTC	New neighbour	AS20912	peer
2026-10-04 23:05 UTC	New neighbour	AS20811	peer
2026-10-04 23:05 UTC	New neighbour	AS15605	peer
2026-10-04 23:05 UTC	New neighbour	AS12637	peer
2026-10-04 23:05 UTC	Relationship changed	AS9498	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS9044	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS9002	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS8218	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS7195	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS6663	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS6204	upstream to peer
2026-10-04 23:05 UTC	New neighbour	AS6057	peer
2026-10-04 23:05 UTC	Relationship changed	AS60171	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS50629	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS50304	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS48362	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS47147	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS4455	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS41327	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS39120	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS37497	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS37468	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS3741	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS37100	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS35280	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS34549	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS34177	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS3214	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS29208	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS29075	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS264409	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS263444	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS25091	upstream to peer
2026-10-04 23:05 UTC	New neighbour	AS24961	peer
2026-10-04 23:05 UTC	Relationship changed	AS22356	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS15958	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS15935	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS15576	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS14840	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS12552	upstream to peer
2026-10-04 23:05 UTC	Relationship changed	AS1121	upstream to peer

WHOIS

aut-num:        AS51265
as-name:        MASSRESPONSE-AS
org:            ORG-MRSG2-RIPE
descr:          Mass Response Service GmbH
descr:          DC Tower 1, 38. Stock
descr:          Donau-City-Straße 7, 1220 Wien
descr:          
descr:          ======================================================================
descr:          https://www.massresponse.com/
descr:          Abuse issues abuse@massresponse.com
descr:          Operational issues noc@massresponse.com
descr:          Peering requests noc@massresponse.com
descr:          Other info https://www.peeringdb.com/net/12246
descr:          ======================================================================
remarks:        
remarks:        ======================================================================
remarks:        Upstreams
remarks:        
remarks:        Colt
remarks:        
remarks:        Next Layer
remarks:        
remarks:        Inter.Link
remarks:        
remarks:        Aristo
remarks:        ======================================================================
remarks:        
remarks:        ======================================================================
remarks:        IXP
remarks:        
remarks:        Peering.cz
remarks:        
remarks:        VIX
remarks:        
remarks:        LINX (LON1)
remarks:        ======================================================================
remarks:        
remarks:        ======================================================================
remarks:        Public Peering
remarks:        
remarks:        ACOnet
remarks:        
remarks:        Vienna Internet eXchange & ACOnet services
remarks:        
remarks:        Twitch
remarks:        
remarks:        Trusted Network
remarks:        
remarks:        OVHcloud
remarks:        
remarks:        Microsoft
remarks:        
remarks:        Hurricane Electric
remarks:        
remarks:        Meta Platforms Inc
remarks:        
remarks:        Valve Corporation
remarks:        
remarks:        Amazon.com
remarks:        
remarks:        SuperNetwork s.r.o.
remarks:        
remarks:        i3D.net
remarks:        ======================================================================
remarks:        
remarks:        ======================================================================
remarks:        Private Peering
remarks:        
remarks:        Netflix
remarks:        
remarks:        Meta Platforms Inc
remarks:        
remarks:        Amazon.com
remarks:        
remarks:        Google LLC
remarks:        
remarks:        Akamai Technologies, Inc
remarks:        ======================================================================
admin-c:        FP1060-RIPE
tech-c:         FP1470-RIPE
tech-c:         MW5116-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         MASSRESPONSE-MNT
created:        2010-07-06T12:09:17Z
last-modified:  2026-06-22T09:16:13Z
source:         RIPE
% 92 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/51265

const res = await fetch('https://ip-fd.net/api/v1/asn/51265', {
  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/51265', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/51265');
curl_setopt($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/51265", 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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