← Back to homeRead the BGP / ASN guide

ASN LANDING PAGE

AS33891

CORE-BACKBONE Core-Backbone GmbH

Last updated · Jul 20, 2026

Country

—

Total prefixes

0

IPv4 prefixes

0

IPv6 prefixes

0

ASN summary

How to read the scale of AS33891

CORE-BACKBONE Core-Backbone GmbH currently reports 0 prefixes and 80 upstream, downstream, or peer relationships. These counts describe the current dataset; they do not by themselves prove network quality, reach, or service use.

What can an ASN page answer?

An ASN page shows the public organization label, country or region, BGP prefixes, and available peer and upstream relationships. It adds network context but cannot confirm a website host, physical facility, security status, or service quality.

How should you read the organization and region fields?

CORE-BACKBONE Core-Backbone GmbH is currently associated with an unknown region. These values come from public network sources and are useful lookup clues; an organization label, registration region, and actual service location may differ.

How should you verify the AS33891 result?

The page shows ASN data returned by the current upstream query; interpret it with the update time. Open representative IP pages from the same network and compare prefixes, source labels, and query times. Verify operator or service claims with the relevant registry or network operator.

How to verify this ASN result

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

—

AS3356

AS3356

—

AS60068

AS60068

—

AS39392

AS39392

—

AS6461

AS6461

—

AS1299

AS1299

—

AS12912

AS12912

—

AS6939

AS6939

—

AS59796

AS59796

—

AS44592

AS44592

—

AS50673

AS50673

—

AS3257

AS3257

—

AS7195

AS7195

—

AS4637

AS4637

—

AS8881

AS8881

—

AS9498

AS9498

—

AS34779

AS34779

—

AS37468

AS37468

—

AS21413

AS21413

—

AS6855

AS6855

—

AS1273

AS1273

—

AS8220

AS8220

—

AS47692

AS47692

—

AS64049

AS64049

—

AS9121

AS9121

—

AS3320

AS3320

—

AS58453

AS58453

—

AS20473

AS20473

—

AS4230

AS4230

—

AS31133

AS31133

—

AS3216

AS3216

—

AS14840

AS14840

—

AS7473

AS7473

—

AS48314

AS48314

—

AS12337

AS12337

—

AS202425

AS202425

—

AS51202

AS51202

—

AS4826

AS4826

—

AS396356

AS396356

—

AS30844

AS30844

—

Peers

AS12577

AS12577

—

AS47692

AS47692

—

AS60068

AS60068

—

AS1299

AS1299

—

AS205206

AS205206

—

AS50673

AS50673

—

AS3257

AS3257

—

AS3356

AS3356

—

AS6939

AS6939

—

AS25220

AS25220

—

AS50629

AS50629

—

AS13030

AS13030

—

AS6461

AS6461

—

AS6667

AS6667

—

AS14907

AS14907

—

AS3320

AS3320

—

AS35426

AS35426

—

AS6830

AS6830

—

AS29691

AS29691

—

AS28917

AS28917

—

AS24482

AS24482

—

AS3399

AS3399

—

AS21232

AS21232

—

AS196621

AS196621

—

AS48185

AS48185

—

AS50628

AS50628

—

AS6881

AS6881

—

AS39392

AS39392

—

AS18106

AS18106

—

AS6894

AS6894

—

AS50304

AS50304

—

AS25091

AS25091

—

AS42708

AS42708

—

AS48237

AS48237

—

AS12969

AS12969

—

AS34177

AS34177

—

AS58952

AS58952

—

AS1836

AS1836

—

AS8455

AS8455

—

AS680

AS680

—

Prefix inventory

PrefixNameCountry

Related ASN pages

AS15169 · Google

Review Google network organization fields, prefixes, peers, upstreams, and downstreams.

AS13335 · Cloudflare

Review Cloudflare network organization fields, prefixes, peers, upstreams, and downstreams.

AS8075 · Microsoft

Review Microsoft network organization fields, prefixes, peers, upstreams, and downstreams.

AS16509 · Amazon

Review Amazon network organization fields, prefixes, peers, upstreams, and downstreams.

Related lookups and next steps

Frequently asked questions about this ASN page

What does AS33891 represent?

AS33891 is an autonomous system number. The current source associates it with CORE-BACKBONE Core-Backbone GmbH and the region field an unknown region; those values add network context but do not prove a specific service, physical location, or quality level.

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?

Open a concrete IP page to check how the address maps into AS33891, then compare the prefix, source labels, and query time. Verify operator or service claims with the relevant registry or network operator.

Related topics

BGP and ASN Basics Guide

Use real IP and ASN pages to understand ASNs, BGP prefixes, peers, upstreams, and downstreams, including the limits of each snapshot.

Routing Troubleshooting and Network Analysis

Build troubleshooting context from an IP, BGP prefix, ASN, and public network relationships without treating static route data as a packet path.

Cloud Network and ASN Comparison

Compare representative cloud and edge networks by ASN, announced prefixes, peers, upstreams, and downstreams without inferring a specific host or customer workload.