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AS1554United States Department of Defense (DoD)

United StatesRegistryARIN

As of 22nd October 2026, AS1554 (United States Department of Defense…), a network registered in the United States with ARIN, originates 25 IPv4 prefixes covering 357k addresses. By IPv4 address space that makes it the 862nd-largest of the 79,655 networks we see originating IPv4, and the 216th-largest of 18,475 in the United States. It is seen behind 1 upstream network, most often AS1540 (Headquarters, USAISC), and in front of 12 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

25

IPv6 prefixes

0

IPv4 addresses

357k

IPv6 /64s

0

Upstream graph

The networks AS1554 is seen behind, one and two hops out, drawn from real AS paths.

AS1554Toward the internet core
Upstream graph for AS1554: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS1554United States Dep…This networkAS1540Headquarters, USA…AS27064Defense Informati…AS27065United States Dep…

Networks observed one and two hops upstream of AS1554 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

27

adjacent networks

Upstreams
14%
Peers
1452%
Downstreams
1244%

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

Upstreams of AS1554
NetworkCountryRelationshipPathsVantage pts
AS1540Headquarters, USAISCUSPeer15,69177

Prefixes

The largest blocks AS1554 originates, widest first.

Largest prefixes originated by AS1554
PrefixAddressesVisibility
6.126.0.0/15131k77/77
136.207.128.0/1732.8k77/77
136.210.0.0/1732.8k77/77
136.215.128.0/1732.8k77/77
136.210.128.0/1816.4k77/77
136.215.0.0/1816.4k77/77
136.215.64.0/1816.4k77/77
136.215.192.0/1816.4k77/77
136.210.192.0/198.2k77/77
155.155.64.0/198.2k77/77

Routing health

How AS1554'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%25

Propagation

  • Globally propagated90% of full-feed peers or more100.0%25
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 25 prefixes

Recent changes

Announcements that started or stopped since 22nd Sept 2026.

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