Country
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ASN LANDING PAGE
AS51265
MASSRESPONSE-AS - Mass Response Service GmbH
Last updated · Apr 4, 2026
Total prefixes
17
IPv4 prefixes
16
IPv6 prefixes
1
ASN summary
How to read the scale of AS51265
MASSRESPONSE-AS - Mass Response Service GmbH currently shows 17 prefixes and 41 upstream, downstream, or peer relationships. Larger prefix inventories often indicate broader network footprint, but they should still be read together with country and peering context.
When is an ASN page most useful?
ASN landing pages are more useful than a single IP page when you want cloud provider attribution, routing research, infrastructure comparison, or network topology analysis at the organization level.
How should you read the country, organization, and role of AS51265?
MASSRESPONSE-AS - Mass Response Service GmbH is currently associated with an unknown region. Country data is only a starting point; the more important signals are the organization name, website, prefix volume, and peering relationships that reveal whether the network behaves like a cloud platform, ISP, CDN, or enterprise backbone.
What should you inspect next after the AS51265 page?
This page is currently showing live ASN data that can be used for peer, prefix, and network scale analysis. The most useful next step is usually to return to a related IP landing page, then compare that concrete address with this ASN profile and with broader topic pages for routing, cloud attribution, or WHOIS ownership analysis.
Search intents this ASN page helps cover
AS51265 ASN lookupAS51265 BGPAS51265 peersAS51265 prefixesAS51265 upstreamsMASSRESPONSE-AS - Mass Response Service GmbH ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
Peers
AS1764
AS1764
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AS8220
AS8220
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AS6939
AS6939
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AS5405
AS5405
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AS8218
AS8218
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AS9002
AS9002
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AS25091
AS25091
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AS35280
AS35280
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AS20764
AS20764
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AS29075
AS29075
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AS34549
AS34549
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AS41327
AS41327
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AS48362
AS48362
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AS3214
AS3214
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AS14840
AS14840
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AS37468
AS37468
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AS50304
AS50304
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AS3212
AS3212
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AS4455
AS4455
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AS6204
AS6204
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AS6663
AS6663
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AS6720
AS6720
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AS9498
AS9498
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AS13004
AS13004
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AS15958
AS15958
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AS29049
AS29049
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AS31510
AS31510
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AS34177
AS34177
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AS34288
AS34288
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AS34927
AS34927
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AS35369
AS35369
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AS37100
AS37100
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AS39120
AS39120
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AS39351
AS39351
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AS40994
AS40994
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AS47147
AS47147
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AS47692
AS47692
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AS49544
AS49544
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AS50629
AS50629
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AS51184
AS51184
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Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 176.126.39.0/24 | AS51265 | — |
| 178.157.4.0/22 | AS51265 | — |
| 185.44.52.0/22 | AS51265 | — |
| 185.69.244.0/22 | AS51265 | — |
| 193.9.252.0/23 | AS51265 | — |
| 193.9.252.0/24 | AS51265 | — |
| 193.9.253.0/24 | AS51265 | — |
| 197.211.128.0/18 | AS51265 | — |
| 2a04:9540::/29 | AS51265 | — |
| 41.66.64.0/18 | AS51265 | — |
| 62.240.128.0/19 | AS51265 | — |
| 62.240.136.0/24 | AS51265 | — |
| 62.240.137.0/24 | AS51265 | — |
| 83.216.32.0/19 | AS51265 | — |
| 83.216.32.0/20 | AS51265 | — |
| 83.216.48.0/20 | AS51265 | — |
| 83.216.48.0/21 | AS51265 | — |
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Related lookups and next steps
WHOIS vs ASN Ownership Guide
Continue from this ASN into the differences between WHOIS ownership and ASN ownership.
Routing Troubleshooting and Network Analysis
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Cloud Network and ASN Comparison
Useful when you want to compare this ASN against larger cloud and edge networks.
WHOIS and IP Ownership Guide
Continue from the ASN page into WHOIS and ownership verification.
Frequently asked questions about this ASN page
What does AS51265 represent?
AS51265 is an autonomous system number used to identify an independently operated network. The current page associates it with MASSRESPONSE-AS - Mass Response Service GmbH in an unknown region, which helps determine whether it behaves like a cloud provider, ISP, CDN, or enterprise backbone.
What are peers, upstreams, and prefixes useful for on the AS51265 page?
They help explain the scale, interconnection depth, and route structure of AS51265. Richer peering and upstream data often indicate broader network reach, but they should still be interpreted together with prefixes and related IP landing pages.
What should you do after reviewing AS51265?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS51265, then continue into cloud, WHOIS, or routing topic pages to understand the network in a broader context.
Related topics
WHOIS vs ASN Ownership Guide
Understand why WHOIS ownership and ASN ownership can differ, and how to combine both when deciding who really owns or operates an IP.
WHOIS and IP Ownership Guide
Use WHOIS, ASN, prefixes, and organization data to determine who ultimately owns an IP, range, or resolved domain target.
BGP and ASN Basics Guide
Learn what ASN, BGP routes, prefixes, upstreams, downstreams, and peers mean, then explore real ASN pages.
Cloud Network and ASN Comparison
Compare large cloud and edge networks such as Google, Cloudflare, Microsoft, and Amazon through their ASN landing pages.