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AS345United States Department of Defense (DoD)

United StatesRegistryARIN

As of 24th October 2026, AS345 (United States Department of Defense…), a network registered in the United States with ARIN, originates 12 IPv4 prefixes covering 134k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 1,849th-largest of the 79,671 networks we see originating IPv4, and the 559th-largest of 18,487 in the United States. It is seen behind 3 upstream networks, most often AS306 (United States Department of Defense…) and AS27153 (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

12

IPv6 prefixes

1

IPv4 addresses

134k

IPv6 /64s

16.8M

Upstream graph

The networks AS345 is seen behind, one and two hops out, drawn from real AS paths.

AS345Toward the internet core
Upstream graph for AS345: 7 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS345United States Dep…This networkAS306United States Dep…AS5974United States Dep…AS27153United States Dep…AS367United States Dep…AS1540Headquarters, USA…AS27064Defense Informati…AS27066United States Dep…

Networks observed one and two hops upstream of AS345 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

6

adjacent networks

Upstreams
350%
Peers
350%
Downstreams
00%

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

Upstreams of AS345
NetworkCountryRelationshipPathsVantage pts
AS306United States Department of Defense (DoD)USPeer518138
AS27153United States Department of Defense (DoD)USPeer38076
AS5974United States Department of Defense (DoD)USPeer7676

Prefixes

The largest blocks AS345 originates, widest first.

Largest prefixes originated by AS345
PrefixAddressesVisibility
55.3.0.0/1665.5k76/76
55.195.0.0/1665.5k76/76
55.3.102.0/2425676/76
55.3.104.0/2425676/76
55.3.251.0/2425676/76
55.3.252.0/2425676/76
156.112.250.0/2425676/76
214.24.21.0/2425676/76
214.24.24.0/2425676/76
214.24.26.0/2425676/76

Routing health

How AS345'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%13

Propagation

  • Globally propagated90% of full-feed peers or more100.0%13
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 12 prefixes

IPv6 — 1 prefixes

  • /4016.8M × /64100.0%1

Recent changes

Announcements that started or stopped since 24th Sept 2026.

No announcement by AS345 started or stopped in this period.

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