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AS747Headquarters, USAISC

United StatesRegistryARIN

As of 22nd October 2026, AS747 (Headquarters, USAISC), a network registered in the United States with ARIN, originates 46 IPv4 prefixes covering 146k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 1,692nd-largest of the 79,655 networks we see originating IPv4, and the 486th-largest of 18,475 in the United States. It is seen behind 1 upstream network, most often AS27066 (United States Department of Defense…), 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

46

IPv6 prefixes

1

IPv4 addresses

146k

IPv6 /64s

65.5k

Upstream graph

The networks AS747 is seen behind, one and two hops out, drawn from real AS paths.

AS747Toward the internet core
Upstream graph for AS747: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS747Headquarters, USA…This networkAS27066United States Dep…AS721United States Dep…AS27064Defense Informati…

Networks observed one and two hops upstream of AS747 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 AS747
NetworkCountryRelationshipPathsVantage pts
AS27066United States Department of Defense (DoD)USPeer4,836139

Prefixes

All 47

The largest blocks AS747 originates, widest first.

Largest prefixes originated by AS747
PrefixAddressesVisibility
147.242.0.0/1665.5k77/77
143.68.64.0/198.2k77/77
160.143.192.0/198.2k77/77
160.143.224.0/198.2k77/77
143.73.240.0/204.1k77/77
143.76.112.0/204.1k77/77
143.86.128.0/204.1k77/77
144.107.144.0/204.1k77/77
144.107.224.0/204.1k77/77
150.196.48.0/204.1k77/77

Routing health

How AS747'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%47

Propagation

  • Globally propagated90% of full-feed peers or more100.0%47
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 46 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 22nd Sept 2026.

22 announced and 21 withdrawn in all; the most recent are shown.

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