AS4University of Southern California
United StatesRegistryARINAt a glance
IPv4 prefixes
45
IPv6 prefixes
8
IPv4 addresses
70.4k
IPv6 /64s
8.6B
Upstream graph
The networks AS4 is seen behind, one and two hops out, drawn from real AS paths.
AS4Toward the internet core
Networks observed one and two hops upstream of AS4 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
30
adjacent networks
- Upstreams
- 930%
- Peers
- 1860%
- Downstreams
- 310%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS226Los Nettos | US | Peer | 2,430 | 109 |
| AS567Los Nettos | US | Peer | 812 | 61 |
| AS10886University of Maryland | US | Peer | 79 | 79 |
| AS174Cogent Communications, LLC | US | Peer | 79 | 79 |
| AS266306CENTRALNETT TELECOM |  BR | Peer | 26 | 26 |
| AS37358BitCo |  ZA | Peer | 11 | 5 |
| AS400215Sambanova Systems, Inc. | US | Peer | 10 | 4 |
| AS30844Liquid Intelligent Technologies |  GB | Peer | 1 | 1 |
| AS133296Web Werks India Pvt. Ltd. |  IN | Peer | 1 | 1 |
Prefixes
All 53The largest blocks AS4 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 128.9.192.0/18 | 16.4k | 79/80 |
| 128.9.0.0/20 | 4.1k | 79/80 |
| 128.9.32.0/20 | 4.1k | 79/80 |
| 128.9.48.0/20 | 4.1k | 79/80 |
| 128.9.64.0/20 | 4.1k | 79/80 |
| 128.9.80.0/20 | 4.1k | 79/80 |
| 128.9.96.0/20 | 4.1k | 79/80 |
| 128.9.112.0/20 | 4.1k | 79/80 |
| 128.9.128.0/20 | 4.1k | 79/80 |
| 128.9.144.0/20 | 4.1k | 79/80 |
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.