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AS5277United States Department of Defense (DoD)

United StatesRegistryARIN

As of 22nd October 2026, AS5277 (United States Department of Defense…), a network registered in the United States with ARIN, originates 16 IPv4 prefixes covering 266k addresses. By IPv4 address space that makes it the 1,068th-largest of the 79,663 networks we see originating IPv4, and the 283rd-largest of 18,476 in the United States. It is seen behind 1 upstream network, most often AS747 (Headquarters, USAISC). 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

0

IPv4 addresses

266k

IPv6 /64s

0

Upstream graph

The networks AS5277 is seen behind, one and two hops out, drawn from real AS paths.

AS5277Toward the internet core
Upstream graph for AS5277: 2 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS5277United States Dep…This networkAS747Headquarters, USA…AS27066United States Dep…

Networks observed one and two hops upstream of AS5277 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS5277
NetworkCountryRelationshipPathsVantage pts
AS747Headquarters, USAISCUSPeer1,23277

Prefixes

The largest blocks AS5277 originates, widest first.

Largest prefixes originated by AS5277
PrefixAddressesVisibility
143.77.0.0/1665.5k77/77
143.138.0.0/1665.5k77/77
144.59.0.0/1665.5k77/77
160.135.0.0/1665.5k77/77
147.242.100.0/221k77/77
6.16.86.0/2425677/77
6.16.87.0/2425677/77
6.16.201.0/2425677/77
6.148.80.0/2425677/77
6.148.82.0/2425677/77

Routing health

How AS5277'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%16

Propagation

  • Globally propagated90% of full-feed peers or more100.0%16
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 16 prefixes

Recent changes

Announcements that started or stopped since 22nd Sept 2026.

  • Announced6.148.83.0/2415th Oct 2026
  • Announced6.16.201.0/2414th Oct 2026
  • Withdrawn143.138.102.0/234th Oct 2026
  • Withdrawn143.138.107.0/244th Oct 2026
  • Withdrawn143.138.108.0/244th Oct 2026
  • Withdrawn143.138.109.0/244th Oct 2026
  • Withdrawn143.138.116.0/244th Oct 2026
  • Withdrawn143.138.12.0/244th Oct 2026
  • Withdrawn143.138.125.0/244th Oct 2026
  • Withdrawn143.138.132.0/244th Oct 2026
  • Withdrawn143.138.133.0/244th Oct 2026
  • Withdrawn143.138.134.0/244th Oct 2026

172 announced and 170 withdrawn in all; the most recent are shown.

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