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AS5974United States Department of Defense (DoD)

United StatesRegistryARIN

As of 22nd October 2026, AS5974 (United States Department of Defense…), a network registered in the United States with ARIN, originates 16 IPv4 prefixes covering 93.7k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 2,495th-largest of the 79,663 networks we see originating IPv4, and the 798th-largest of 18,476 in the United States. It is seen behind 1 upstream network, most often AS27064 (Defense Information Systems Agency…), and in front of 2 downstream networks. 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

16

IPv6 prefixes

3

IPv4 addresses

93.7k

IPv6 /64s

197k

Upstream graph

The networks AS5974 is seen behind, one and two hops out, drawn from real AS paths.

AS5974Toward the internet core
Upstream graph for AS5974: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS5974United States Dep…This networkAS27064Defense Informati…AS721United States Dep…AS27065United States Dep…

Networks observed one and two hops upstream of AS5974 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
117%
Peers
350%
Downstreams
233%

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

Upstreams of AS5974
NetworkCountryRelationshipPathsVantage pts
AS27064Defense Information Systems Agency (DISA)USPeer1,573140

Prefixes

The largest blocks AS5974 originates, widest first.

Largest prefixes originated by AS5974
PrefixAddressesVisibility
131.77.0.0/1665.5k77/77
214.49.128.0/1816.4k77/77
214.66.160.0/198.2k77/77
214.66.182.0/2351276/77
131.77.104.0/2425677/77
156.112.88.0/2425677/77
156.112.89.0/2425677/77
156.112.90.0/2425677/77
156.112.91.0/2425677/77
156.112.92.0/2425677/77

Routing health

How AS5974'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%19

Propagation

  • Globally propagated90% of full-feed peers or more100.0%19
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 16 prefixes

IPv6 — 3 prefixes

  • /4865.5k × /64100.0%3

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS5974 started or stopped in this period.

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