Country
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ASN LANDING PAGE
AS27066
DNIC-ASBLK-27032-27159 - United States Department of Defense DoD
Last updated · Apr 4, 2026
Total prefixes
108
IPv4 prefixes
100
IPv6 prefixes
8
ASN summary
How to read the scale of AS27066
DNIC-ASBLK-27032-27159 - United States Department of Defense DoD currently shows 108 prefixes and 34 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 AS27066?
DNIC-ASBLK-27032-27159 - United States Department of Defense DoD 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 AS27066 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
AS27066 ASN lookupAS27066 BGPAS27066 peersAS27066 prefixesAS27066 upstreamsDNIC-ASBLK-27032-27159 - United States Department of Defense DoD ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS747
AS747
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AS27046
AS27046
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AS1637
AS1637
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AS637
AS637
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AS427
AS427
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AS27137
AS27137
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AS647
AS647
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AS1600
AS1600
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AS5927
AS5927
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AS1649
AS1649
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AS409
AS409
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AS5972
AS5972
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AS399
AS399
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AS1516
AS1516
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AS5860
AS5860
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AS665
AS665
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AS27153
AS27153
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AS619
AS619
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AS306
AS306
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AS1908
AS1908
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AS3916
AS3916
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AS5958
AS5958
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AS5982
AS5982
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AS27149
AS27149
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AS170
AS170
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AS321
AS321
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AS405
AS405
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AS3954
AS3954
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AS5284
AS5284
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AS337
AS337
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AS316
AS316
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AS6025
AS6025
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Peers
Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 134.229.134.0/24 | AS27066 | — |
| 134.229.176.0/24 | AS27066 | — |
| 134.229.177.0/24 | AS27066 | — |
| 134.229.178.0/24 | AS27066 | — |
| 139.241.131.0/24 | AS27066 | — |
| 139.241.132.0/24 | AS27066 | — |
| 139.241.133.0/24 | AS27066 | — |
| 139.241.139.0/24 | AS27066 | — |
| 139.241.234.0/23 | AS27066 | — |
| 139.241.74.0/24 | AS27066 | — |
| 139.241.76.0/22 | AS27066 | — |
| 139.242.12.0/24 | AS27066 | — |
| 139.242.51.0/24 | AS27066 | — |
| 140.14.45.0/24 | AS27066 | — |
| 140.14.47.0/24 | AS27066 | — |
| 155.7.180.0/24 | AS27066 | — |
| 156.112.113.0/24 | AS27066 | — |
| 156.112.114.0/24 | AS27066 | — |
| 156.112.135.0/24 | AS27066 | — |
| 156.112.166.0/24 | AS27066 | — |
| 156.112.167.0/24 | AS27066 | — |
| 159.77.104.0/24 | AS27066 | — |
| 159.77.105.0/24 | AS27066 | — |
| 159.77.106.0/23 | AS27066 | — |
| 159.77.33.0/24 | AS27066 | — |
| 159.77.34.0/24 | AS27066 | — |
| 159.77.35.0/24 | AS27066 | — |
| 159.77.44.0/24 | AS27066 | — |
| 159.77.45.0/24 | AS27066 | — |
| 159.77.46.0/23 | AS27066 | — |
| 159.77.79.0/24 | AS27066 | — |
| 159.77.80.0/24 | AS27066 | — |
| 159.77.81.0/24 | AS27066 | — |
| 159.77.84.0/24 | AS27066 | — |
| 159.77.85.0/24 | AS27066 | — |
| 163.251.0.0/24 | AS27066 | — |
| 163.251.101.0/24 | AS27066 | — |
| 163.251.104.0/24 | AS27066 | — |
| 163.251.105.0/24 | AS27066 | — |
| 163.251.112.0/24 | AS27066 | — |
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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 AS27066 represent?
AS27066 is an autonomous system number used to identify an independently operated network. The current page associates it with DNIC-ASBLK-27032-27159 - United States Department of Defense DoD 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 AS27066 page?
They help explain the scale, interconnection depth, and route structure of AS27066. 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 AS27066?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS27066, 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.