SUBNET.IM

AS1540Headquarters, USAISC

United StatesRegistryARIN

At a glance

IPv4 prefixes

1,054

IPv6 prefixes

37

IPv4 addresses

6.7M

IPv6 /64s

2.4M

Upstream graph

The networks AS1540 is seen behind, one and two hops out, drawn from real AS paths.

AS1540Toward the internet core
Upstream graph for AS1540: 4 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS1540Headquarters, USA…This networkAS367United States Dep…AS27064Defense Informati…AS27065United States Dep…AS721United States Dep…

Networks observed one and two hops upstream of AS1540 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

10

adjacent networks

Upstreams
220%
Peers
550%
Downstreams
330%

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

Upstreams of AS1540
NetworkCountryRelationshipPathsVantage pts
AS27064Defense Information Systems Agency (DISA)USPeer173,793142
AS367United States Department of Defense (DoD)USPeer24,508142

Prefixes

All 1,091

The largest blocks AS1540 originates, widest first.

Largest prefixes originated by AS1540
PrefixAddressesVisibility
6.240.0.0/121M78/80
6.248.0.0/13524k78/80
6.244.0.0/14262k79/80
6.140.0.0/15131k79/80
146.14.0.0/15131k80/80
6.41.0.0/1665.5k80/80
6.68.0.0/1665.5k79/80
55.196.0.0/1665.5k80/80
128.190.0.0/1665.5k80/80
129.29.0.0/1665.5k80/80

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