AS55University of Pennsylvania
United StatesRegistryARINAt a glance
IPv4 prefixes
5
IPv6 prefixes
1
IPv4 addresses
262k
IPv6 /64s
4.3B
Upstream graph
The networks AS55 is seen behind, one and two hops out, drawn from real AS paths.
AS55Toward the internet core
Networks observed one and two hops upstream of AS55 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
12
adjacent networks
- Upstreams
- 433%
- Peers
- 650%
- Downstreams
- 217%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS3356Lumen (Level 3) | US | Peer | 265 | 67 |
| AS174Cogent Communications, LLC | US | Peer | 177 | 42 |
| AS11164Internet2 I2PX | US | Peer | 93 | 29 |
| AS11537Internet2 | US | Peer | 16 | 2 |
Prefixes
The largest blocks AS55 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 128.91.0.0/16 | 65.5k | 79/80 |
| 130.91.0.0/16 | 65.5k | 79/80 |
| 158.130.0.0/16 | 65.5k | 79/80 |
| 165.123.0.0/16 | 65.5k | 79/80 |
| 192.84.2.0/24 | 256 | 79/80 |
| 2607:f470::/32 | 4.3B × /64 | 61/62 |
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.