SUBNET.IM

AS131University of California, Santa Barbara

United StatesRegistryARIN

At a glance

IPv4 prefixes

5

IPv6 prefixes

1

IPv4 addresses

132k

IPv6 /64s

4.3B

Upstream graph

The networks AS131 is seen behind, one and two hops out, drawn from real AS paths.

AS131Toward the internet core
Upstream graph for AS131: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS131University of Cal…This networkAS2152CENIC - CalRENAS2153CENICAS3356Lumen (Level 3)AS6939Hurricane Electri…AS293ESnet

Networks observed one and two hops upstream of AS131 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 AS131
NetworkCountryRelationshipPathsVantage pts
AS2152CENIC - CalRENUSPeer456140
AS2153CENICUSPeer51

Prefixes

The largest blocks AS131 originates, widest first.

Largest prefixes originated by AS131
PrefixAddressesVisibility
128.111.0.0/1665.5k80/80
169.231.0.0/1665.5k80/80
192.150.216.0/2351280/80
192.35.222.0/2425680/80
199.120.153.0/2425680/80
2607:f378::/324.3B × /6461/62

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