Country
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ASN LANDING PAGE
AS40999
DUSNET-AS - dus.net GmbH
Last updated · Apr 4, 2026
Total prefixes
4
IPv4 prefixes
2
IPv6 prefixes
2
ASN summary
How to read the scale of AS40999
DUSNET-AS - dus.net GmbH currently shows 4 prefixes and 40 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 AS40999?
DUSNET-AS - dus.net 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 AS40999 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
AS40999 ASN lookupAS40999 BGPAS40999 peersAS40999 prefixesAS40999 upstreamsDUSNET-AS - dus.net GmbH ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
Detailed data for this ASN is not available right now.
Peers
AS12676
AS12676
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AS13237
AS13237
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AS6939
AS6939
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AS5405
AS5405
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AS20764
AS20764
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AS34019
AS34019
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AS35280
AS35280
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AS37468
AS37468
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AS3214
AS3214
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AS6057
AS6057
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AS8298
AS8298
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AS14840
AS14840
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AS25091
AS25091
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AS34177
AS34177
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AS37100
AS37100
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AS39351
AS39351
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AS48362
AS48362
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AS50673
AS50673
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AS559
AS559
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AS1103
AS1103
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AS1140
AS1140
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AS1764
AS1764
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AS1828
AS1828
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AS3216
AS3216
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AS3333
AS3333
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AS3399
AS3399
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AS3462
AS3462
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AS5713
AS5713
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AS6204
AS6204
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AS6663
AS6663
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AS8283
AS8283
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AS12637
AS12637
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AS12779
AS12779
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AS12859
AS12859
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AS12969
AS12969
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AS14630
AS14630
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AS14907
AS14907
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AS15547
AS15547
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AS15958
AS15958
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AS18106
AS18106
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Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 178.16.48.0/22 | AS40999 | — |
| 2a04:2100::/32 | AS40999 | — |
| 2a04:2101::/32 | AS40999 | — |
| 83.125.8.0/22 | AS40999 | — |
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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 AS40999 represent?
AS40999 is an autonomous system number used to identify an independently operated network. The current page associates it with DUSNET-AS - dus.net 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 AS40999 page?
They help explain the scale, interconnection depth, and route structure of AS40999. 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 AS40999?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS40999, 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.