Address space
AS9367 ISCT Institute of Science Tokyo
IPv4 prefixes
9
65.54K addresses
IPv6 prefixes
1
Most common size
/24
IPv4
Flagged
0
Shape
Prefix sizes
How this network carves its IPv4 space. A wall of /24s usually means many small customer assignments or fine-grained traffic engineering; a few short prefixes means large contiguous allocations announced whole.
Shape
Prefix sizes
Geography
Where the space lands
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 10 |
Inventory
All prefixes
| Prefix | Family | Addresses | Country | Flags |
|---|---|---|---|---|
| 131.112.0.0/17 | IPv4 | 32,768 | JP | |
| 131.112.128.0/18 | IPv4 | 16,384 | JP | |
| 131.112.192.0/19 | IPv4 | 8,192 | JP | |
| 131.112.224.0/20 | IPv4 | 4,096 | JP | |
| 131.112.240.0/21 | IPv4 | 2,048 | JP | |
| 131.112.248.0/22 | IPv4 | 1,024 | JP | |
| 131.112.252.0/23 | IPv4 | 512 | JP | |
| 131.112.254.0/24 | IPv4 | 256 | JP | |
| 131.112.255.0/24 | IPv4 | 256 | JP | |
| 2403:4440::/32 | IPv6 | — | JP |