subnet.im

AS27064Defense Information Systems Agency (DISA)

United StatesRegistryARIN

As of 22nd October 2026, AS27064 (Defense Information Systems Agency…), a network registered in the United States with ARIN, originates 933 IPv4 prefixes covering 1.8M addresses and 33 IPv6 prefixes. By IPv4 address space that makes it the 299th-largest of the 79,655 networks we see originating IPv4, and the 70th-largest of 18,475 in the United States. It is seen behind 1 upstream network, most often AS721 (United States Department of Defense…), and in front of 79 downstream networks. None of its announcements have a valid RPKI ROA. Over 99% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

933

IPv6 prefixes

33

IPv4 addresses

1.8M

IPv6 /64s

2.2M

Upstream graph

The networks AS27064 is seen behind, one and two hops out, drawn from real AS paths.

AS27064Toward the internet core
Upstream graph for AS27064: 2 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS27064Defense Informati…This networkAS721United States Dep…AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS27064 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

161

adjacent networks

Upstreams
11%
Peers
8150%
Downstreams
7949%

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

Upstreams of AS27064
NetworkCountryRelationshipPathsVantage pts
AS721United States Department of Defense (DoD)USPeer790,169140

Prefixes

All 966

The largest blocks AS27064 originates, widest first.

Largest prefixes originated by AS27064
PrefixAddressesVisibility
26.20.0.0/1665.5k77/77
28.5.0.0/1665.5k77/77
128.19.0.0/1665.5k77/77
128.37.0.0/1665.5k77/77
130.16.0.0/1665.5k77/77
131.64.0.0/1665.5k77/77
134.182.0.0/1665.5k77/77
137.246.0.0/1665.5k77/77
139.234.0.0/1665.5k77/77
139.253.0.0/1665.5k77/77

Routing health

How AS27064'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%966

Propagation

  • Globally propagated90% of full-feed peers or more99.9%965
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.1%1

Prefix sizes

IPv4 — 933 prefixes

IPv6 — 33 prefixes

  • /4865.5k × /64100.0%33

Recent changes

Announcements that started or stopped since 22nd Sept 2026.

44 announced and 45 withdrawn in all; the most recent are shown.

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