Address space
AS18135 BTV BTV CO.,LTD.
IPv4 prefixes
9
38.91K addresses
IPv6 prefixes
1
Most common size
/21
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 |
|---|---|---|---|---|
| 42.83.0.0/18 | IPv4 | 16,384 | JP | |
| 103.205.48.0/22 | IPv4 | 1,024 | JP | |
| 153.124.224.0/21 | IPv4 | 2,048 | JP | |
| 163.131.104.0/21 | IPv4 | 2,048 | JP | |
| 182.23.216.0/21 | IPv4 | 2,048 | JP | |
| 203.211.32.0/20 | IPv4 | 4,096 | JP | |
| 203.211.48.0/21 | IPv4 | 2,048 | JP | |
| 219.100.88.0/22 | IPv4 | 1,024 | JP | |
| 219.103.0.0/19 | IPv4 | 8,192 | JP | |
| 2401:d500::/32 | IPv6 | — | JP |