SUBNET.IM

AS9Carnegie Mellon University

United StatesRegistryARINTypeEyeball

At a glance

IPv4 prefixes

8

IPv6 prefixes

1

IPv4 addresses

134k

IPv6 /64s

4.3B

Upstream graph

The networks AS9 is seen behind, one and two hops out, drawn from real AS paths.

AS9Toward the internet core
Upstream graph for AS9: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS9Carnegie Mellon U…This networkAS3356Lumen (Level 3)AS5050Pittsburgh Superc…AS6461Zayo BandwidthAS46887Zayo BandwidthAS399855Keystone REN, LLCAS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS174Cogent Communicat…AS6667Elisa OyjAS32590Valve CorporationAS6939Hurricane Electri…AS11164Internet2 I2PX

Networks observed one and two hops upstream of AS9 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

13

adjacent networks

Upstreams
646%
Peers
754%
Downstreams
00%

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

Upstreams of AS9
NetworkCountryRelationshipPathsVantage pts
AS6461Zayo BandwidthUSPeer40658
AS399855Keystone REN, LLCUSPeer9226
AS3356Lumen (Level 3)USPeer7777
AS46887Zayo BandwidthUSPeer639
AS5050Pittsburgh Supercomputing CenterUSPeer2917
AS2153CENICUSPeer11

Prefixes

The largest blocks AS9 originates, widest first.

Largest prefixes originated by AS9
PrefixAddressesVisibility
128.2.0.0/1665.5k80/80
128.237.0.0/1665.5k80/80
204.194.28.0/221k80/80
209.129.244.0/2351278/80
192.5.146.0/2425680/80
192.12.32.0/2425680/80
192.58.107.0/2425680/80
192.80.210.0/2425680/80
2607:fb28::/324.3B × /6430/62

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