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AS27142United States Department of Defense (DoD)

United StatesRegistryARIN

As of 22nd October 2026, AS27142 (United States Department of Defense…), a network registered in the United States with ARIN, originates 56 IPv4 prefixes covering 161k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 1,568th-largest of the 79,663 networks we see originating IPv4, and the 449th-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 1 downstream network. 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

56

IPv6 prefixes

3

IPv4 addresses

161k

IPv6 /64s

197k

Upstream graph

The networks AS27142 is seen behind, one and two hops out, drawn from real AS paths.

AS27142Toward the internet core
Upstream graph for AS27142: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS27142United States Dep…This networkAS27064Defense Informati…AS721United States Dep…AS27065United States Dep…

Networks observed one and two hops upstream of AS27142 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
125%
Peers
250%
Downstreams
125%

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

Upstreams of AS27142
NetworkCountryRelationshipPathsVantage pts
AS27064Defense Information Systems Agency (DISA)USPeer4,578140

Prefixes

All 59

The largest blocks AS27142 originates, widest first.

Largest prefixes originated by AS27142
PrefixAddressesVisibility
144.251.0.0/1665.5k77/77
214.22.0.0/1665.5k77/77
214.66.96.0/198.2k77/77
164.235.72.0/212k77/77
164.235.232.0/212k77/77
164.235.14.0/2351277/77
214.60.196.0/2351277/77
214.60.198.0/2351277/77
214.60.200.0/2351277/77
214.60.202.0/2351277/77

Routing health

How AS27142'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%59

Propagation

  • Globally propagated90% of full-feed peers or more100.0%59
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 56 prefixes

IPv6 — 3 prefixes

  • /4865.5k × /64100.0%3

Recent changes

Announcements that started or stopped since 22nd Sept 2026.

No announcement by AS27142 started or stopped in this period.

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