SUBNET.IM

AS637United States Department of Defense (DoD)

United StatesRegistryARIN

At a glance

IPv4 prefixes

528

IPv6 prefixes

0

IPv4 addresses

1M

IPv6 /64s

0

Upstream graph

The networks AS637 is seen behind, one and two hops out, drawn from real AS paths.

AS637Toward the internet core
Upstream graph for AS637: 4 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS637United States Dep…This networkAS27064Defense Informati…AS27065United States Dep…AS27066United States Dep…AS721United States Dep…

Networks observed one and two hops upstream of AS637 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

11

adjacent networks

Upstreams
327%
Peers
873%
Downstreams
00%

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

Upstreams of AS637
NetworkCountryRelationshipPathsVantage pts
AS27064Defense Information Systems Agency (DISA)USPeer33,39180
AS27066United States Department of Defense (DoD)USPeer6,20380
AS27065United States Department of Defense (DoD)USPeer2,53180

Prefixes

All 528

The largest blocks AS637 originates, widest first.

Largest prefixes originated by AS637
PrefixAddressesVisibility
138.156.0.0/1665.5k80/80
138.158.0.0/1665.5k80/80
138.168.0.0/1665.5k80/80
158.237.0.0/1665.5k79/80
158.238.0.0/1665.5k80/80
158.243.0.0/1665.5k80/80
158.245.0.0/1665.5k80/80
158.236.0.0/1732.8k79/80
158.236.128.0/1732.8k80/80
158.239.128.0/1732.8k80/80

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