SUBNET.IM

AS21633U.S. Department of the Interior

United StatesRegistryARIN

At a glance

IPv4 prefixes

4

IPv6 prefixes

0

IPv4 addresses

2.8k

IPv6 /64s

0

Upstream graph

The networks AS21633 is seen behind, one and two hops out, drawn from real AS paths.

AS21633Toward the internet core
Upstream graph for AS21633: 4 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS21633U.S. Department o…This networkAS3549Lumen (fka. Globa…AS22284U.S. Department o…AS3356Lumen (Level 3)AS8047GENERAL COMMUNICA…

Networks observed one and two hops upstream of AS21633 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
250%
Peers
250%
Downstreams
00%

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

Upstreams of AS21633
NetworkCountryRelationshipPathsVantage pts
AS22284U.S. Department of the InteriorUSPeer15980
AS3549Lumen (fka. Global Crossing)USPeer15477

Prefixes

The largest blocks AS21633 originates, widest first.

Largest prefixes originated by AS21633
PrefixAddressesVisibility
137.227.192.0/212k79/80
199.5.233.0/2425680/80
205.173.0.0/2425677/80
205.173.4.0/2425677/80

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