AS18087Toyo University
JapanRegistryAPNICAt a glance
IPv4 prefixes
4
IPv6 prefixes
2
IPv4 addresses
135k
IPv6 /64s
69.6k
Upstream graph
The networks AS18087 is seen behind, one and two hops out, drawn from real AS paths.
AS18087Toward the internet core
Networks observed one and two hops upstream of AS18087 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 |
|---|---|---|---|---|
| AS2907Science Information Network | JP | Peer | 301 | 141 |
| AS2519ARTERIA Networks Corporation | JP | Peer | 80 | 80 |
Prefixes
The largest blocks AS18087 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 133.79.0.0/16 | 65.5k | 80/80 |
| 133.79.0.0/17 | 32.8k | 79/80 |
| 133.79.128.0/17 | 32.8k | 79/80 |
| 133.79.192.0/20 | 4.1k | 78/80 |
| 2001:df7:5600::/48 | 65.5k × /64 | 61/62 |
| 2001:df7:5600:8000::/52 | 4.1k × /64 | 4/62 |
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.