AS18121Ishikawa Computer Center Co.,LTD.
JapanRegistryAPNICTypeEyeballAt a glance
IPv4 prefixes
6
IPv6 prefixes
1
IPv4 addresses
23.3k
IPv6 /64s
4.3B
Upstream graph
The networks AS18121 is seen behind, one and two hops out, drawn from real AS paths.
AS18121Toward the internet core
Networks observed one and two hops upstream of AS18121 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
39
adjacent networks
- Upstreams
- 1128%
- Peers
- 2872%
- Downstreams
- 00%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS2497Internet Initiative Japan Inc. | JP | Peer | 373 | 85 |
| AS2518BIGLOBE Inc. | JP | Peer | 68 | 42 |
| AS17676SoftBank Corp. | JP | Peer | 48 | 10 |
| AS18106Viewqwest Pte Ltd |  SG | Peer | 12 | 2 |
| AS9002RETN Limited |  GB | Peer | 7 | 2 |
| AS49544i3D.net B.V |  NL | Peer | 7 | 2 |
| AS4775Globe Telecoms |  PH | Peer | 6 | 1 |
| AS9902NTC Neocom |  KH | Peer | 6 | 1 |
| AS8966Etisalat (E&) |  AE | Peer | 6 | 1 |
| AS7713PT Telkom Indonesia Tbk |  ID | Peer | 2 | 2 |
Prefixes
The largest blocks AS18121 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 202.222.32.0/19 | 8.2k | 79/80 |
| 219.121.224.0/19 | 8.2k | 79/80 |
| 180.94.192.0/20 | 4.1k | 79/80 |
| 180.94.208.0/21 | 2k | 79/80 |
| 103.241.208.0/23 | 512 | 79/80 |
| 103.241.208.0/24 | 256 | 79/80 |
| 2404:a00::/32 | 4.3B × /64 | 62/62 |
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.