SUBNET.IM

AS21838Cirion Technologies (fka. Impsat)

ArgentinaRegistryLACNIC

At a glance

IPv4 prefixes

0

IPv6 prefixes

0

IPv4 addresses

Unknown

IPv6 /64s

Unknown

Upstream graph

The networks AS21838 is seen behind, one and two hops out, drawn from real AS paths.

AS21838Toward the internet core
Upstream graph for AS21838: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS21838Cirion Technologi…This networkAS3549Lumen (fka. Globa…AS3356Lumen (Level 3)AS22284U.S. Department o…

Networks observed one and two hops upstream of AS21838 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

17

adjacent networks

Upstreams
16%
Peers
1588%
Downstreams
16%

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

Upstreams of AS21838
NetworkCountryRelationshipPathsVantage pts
AS3549Lumen (fka. Global Crossing)USPeer122

Prefixes

The largest blocks AS21838 originates, widest first.

AS21838 does not originate any prefix visible from our collectors. Transit-only and unused ASNs both look like this.

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