SUBNET.IM

AS231Michigan State University

United StatesRegistryARIN

At a glance

IPv4 prefixes

7

IPv6 prefixes

2

IPv4 addresses

790k

IPv6 /64s

4.3B

Upstream graph

The networks AS231 is seen behind, one and two hops out, drawn from real AS paths.

AS231Toward the internet core
Upstream graph for AS231: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS231Michigan State Un…This networkAS237Merit Network Inc.AS11164Internet2 I2PXAS11537Internet2AS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS2152CENIC - CalRENAS2497Internet Initiati…AS293ESnetAS2153CENIC

Networks observed one and two hops upstream of AS231 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

8

adjacent networks

Upstreams
338%
Peers
450%
Downstreams
113%

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

Upstreams of AS231
NetworkCountryRelationshipPathsVantage pts
AS237Merit Network Inc.USPeer619142
AS11164Internet2 I2PXUSPeer5151
AS11537Internet2USPeer22

Prefixes

The largest blocks AS231 originates, widest first.

Largest prefixes originated by AS231
PrefixAddressesVisibility
35.8.0.0/13524k78/80
35.20.0.0/14262k79/80
35.12.240.0/212k31/80
192.108.188.0/2425680/80
192.108.190.0/2425680/80
192.108.191.0/2425680/80
192.231.113.0/2425680/80
2605:dd00::/324.3B × /6462/62
2605:dd00:8000::/4865.5k × /6422/62

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