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AS27046United States Department of Defense (DoD)

United StatesRegistryARIN

As of 22nd October 2026, AS27046 (United States Department of Defense…), a network registered in the United States with ARIN, originates 510 IPv4 prefixes covering 334k addresses and 117 IPv6 prefixes. By IPv4 address space that makes it the 903rd-largest of the 79,655 networks we see originating IPv4, and the 226th-largest of 18,475 in the United States. It is seen behind 4 upstream networks, most often AS27064 (Defense Information Systems Agency…) and AS27066 (United States Department of Defense…). None of its announcements have a valid RPKI ROA. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

510

IPv6 prefixes

117

IPv4 addresses

334k

IPv6 /64s

7.7M

Upstream graph

The networks AS27046 is seen behind, one and two hops out, drawn from real AS paths.

AS27046Toward the internet core
Upstream graph for AS27046: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS27046United States Dep…This networkAS1733United States Dep…AS27064Defense Informati…AS27065United States Dep…AS27066United States Dep…AS721United States Dep…

Networks observed one and two hops upstream of AS27046 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

8

adjacent networks

Upstreams
450%
Peers
450%
Downstreams
00%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS27046
NetworkCountryRelationshipPathsVantage pts
AS27064Defense Information Systems Agency (DISA)USPeer41,012140
AS27066United States Department of Defense (DoD)USPeer3,15777
AS27065United States Department of Defense (DoD)USPeer1,84877
AS1733United States Department of Defense (DoD)USPeer61677

Prefixes

All 627

The largest blocks AS27046 originates, widest first.

Largest prefixes originated by AS27046
PrefixAddressesVisibility
164.87.192.0/1816.4k77/77
164.87.160.0/198.2k77/77
131.76.224.0/204.1k77/77
131.76.240.0/204.1k77/77
138.141.16.0/204.1k77/77
140.18.32.0/204.1k77/77
164.87.160.0/204.1k77/77
164.87.224.0/204.1k77/77
164.87.240.0/204.1k77/77
214.73.64.0/204.1k77/77

Routing health

How AS27046's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%627

Propagation

  • Globally propagated90% of full-feed peers or more100.0%627
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 510 prefixes

IPv6 — 117 prefixes

  • /4865.5k × /64100.0%117

Recent changes

Announcements that started or stopped since 22nd Sept 2026.

10 announced and 11 withdrawn in all; the most recent are shown.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.