Country
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ASN LANDING PAGE
AS33891
CORE-BACKBONE - Core-Backbone GmbH
Last updated · Apr 4, 2026
Total prefixes
0
IPv4 prefixes
0
IPv6 prefixes
0
ASN summary
How to read the scale of AS33891
CORE-BACKBONE - Core-Backbone GmbH currently shows 0 prefixes and 80 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 AS33891?
CORE-BACKBONE - Core-Backbone 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 AS33891 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
AS33891 ASN lookupAS33891 BGPAS33891 peersAS33891 prefixesAS33891 upstreamsCORE-BACKBONE - Core-Backbone GmbH ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS49666
AS49666
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AS60068
AS60068
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AS39392
AS39392
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AS3356
AS3356
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AS59796
AS59796
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AS12912
AS12912
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AS50673
AS50673
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AS1299
AS1299
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AS6461
AS6461
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AS6939
AS6939
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AS44592
AS44592
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AS34779
AS34779
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AS21413
AS21413
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AS4637
AS4637
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AS57717
AS57717
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AS7195
AS7195
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AS47692
AS47692
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AS216067
AS216067
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AS48918
AS48918
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AS211826
AS211826
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AS267613
AS267613
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AS41998
AS41998
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AS9121
AS9121
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AS48314
AS48314
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AS12337
AS12337
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AS29670
AS29670
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AS7473
AS7473
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AS20473
AS20473
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AS12306
AS12306
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AS1273
AS1273
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AS28876
AS28876
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AS12387
AS12387
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AS4230
AS4230
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AS5404
AS5404
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AS38193
AS38193
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AS24940
AS24940
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AS37468
AS37468
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AS3320
AS3320
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AS14840
AS14840
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AS64049
AS64049
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Peers
AS47692
AS47692
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AS50673
AS50673
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AS1299
AS1299
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AS60068
AS60068
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AS205206
AS205206
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AS3356
AS3356
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AS3257
AS3257
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AS25220
AS25220
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AS6939
AS6939
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AS50629
AS50629
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AS39392
AS39392
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AS29691
AS29691
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AS13030
AS13030
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AS24482
AS24482
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AS29695
AS29695
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AS3320
AS3320
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AS6461
AS6461
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AS6667
AS6667
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AS14907
AS14907
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AS199524
AS199524
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AS35426
AS35426
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AS6894
AS6894
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AS3399
AS3399
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AS50628
AS50628
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AS21232
AS21232
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AS196621
AS196621
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AS6881
AS6881
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AS18106
AS18106
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AS20764
AS20764
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AS34177
AS34177
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AS48185
AS48185
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AS1836
AS1836
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AS48237
AS48237
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AS6830
AS6830
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AS42708
AS42708
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AS25091
AS25091
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AS22652
AS22652
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AS680
AS680
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AS39351
AS39351
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AS12969
AS12969
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Prefix inventory
| Prefix | Name | Country |
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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
Continue from this ASN into route troubleshooting and network analysis.
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 AS33891 represent?
AS33891 is an autonomous system number used to identify an independently operated network. The current page associates it with CORE-BACKBONE - Core-Backbone 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 AS33891 page?
They help explain the scale, interconnection depth, and route structure of AS33891. 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 AS33891?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS33891, 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.