AS1657University of Louisville
United StatesRegistryARINAt a glance
IPv4 prefixes
14
IPv6 prefixes
1
IPv4 addresses
197k
IPv6 /64s
65.5k
Upstream graph
The networks AS1657 is seen behind, one and two hops out, drawn from real AS paths.
AS1657Toward the internet core
Networks observed one and two hops upstream of AS1657 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.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS3714Kentucky Educational Computing Network | US | Peer | 160 | 136 |
| AS49915Megaport (UK) Limited |  GB | Peer | 79 | 79 |
Prefixes
The largest blocks AS1657 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 136.165.0.0/16 | 65.5k | 79/80 |
| 136.165.0.0/18 | 16.4k | 2/80 |
| 136.165.64.0/18 | 16.4k | 2/80 |
| 136.165.128.0/18 | 16.4k | 2/80 |
| 136.165.192.0/18 | 16.4k | 2/80 |
| 136.165.0.0/19 | 8.2k | 2/80 |
| 136.165.32.0/19 | 8.2k | 2/80 |
| 136.165.64.0/19 | 8.2k | 2/80 |
| 136.165.96.0/19 | 8.2k | 2/80 |
| 136.165.128.0/19 | 8.2k | 2/80 |
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.