subnet.im

AS665United States Department of Defense (DoD)

United StatesRegistryARIN

As of 22nd October 2026, AS665 (United States Department of Defense…), a network registered in the United States with ARIN, originates 41 IPv4 prefixes covering 220k addresses. By IPv4 address space that makes it the 1,234th-largest of the 79,655 networks we see originating IPv4, and the 342nd-largest of 18,475 in the United States. It is seen behind 2 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

41

IPv6 prefixes

0

IPv4 addresses

220k

IPv6 /64s

0

Upstream graph

The networks AS665 is seen behind, one and two hops out, drawn from real AS paths.

AS665Toward the internet core
Upstream graph for AS665: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS665United States Dep…This networkAS27064Defense Informati…AS27066United States Dep…AS721United States Dep…

Networks observed one and two hops upstream of AS665 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

4

adjacent networks

Upstreams
250%
Peers
250%
Downstreams
00%

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

Upstreams of AS665
NetworkCountryRelationshipPathsVantage pts
AS27064Defense Information Systems Agency (DISA)USPeer2,77277
AS27066United States Department of Defense (DoD)USPeer38577

Prefixes

All 41

The largest blocks AS665 originates, widest first.

Largest prefixes originated by AS665
PrefixAddressesVisibility
138.162.0.0/15131k77/77
138.163.0.0/1665.5k77/77
205.85.112.0/204.1k77/77
138.162.168.0/212k77/77
205.85.0.0/212k77/77
138.162.8.0/221k77/77
138.162.112.0/221k77/77
138.163.104.0/221k77/77
138.163.128.0/221k77/77
205.85.48.0/221k77/77

Routing health

How AS665'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%41

Propagation

  • Globally propagated90% of full-feed peers or more100.0%41
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 41 prefixes

Recent changes

Announcements that started or stopped since 22nd Sept 2026.

No announcement by AS665 started or stopped in this period.

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