Address space
AS2500 WIDE-BB WIDE Project
IPv4 prefixes
3
65.54K addresses
IPv6 prefixes
11
Most common size
/18
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 | 14 |
Inventory
All prefixes
| Prefix | Family | Addresses | Country | Flags |
|---|---|---|---|---|
| 133.4.128.0/18 | IPv4 | 16,384 | JP | |
| 202.249.0.0/18 | IPv4 | 16,384 | JP | |
| 203.178.128.0/17 | IPv4 | 32,768 | JP | |
| 2001:200::/38 | IPv6 | — | JP | |
| 2001:200:400::/39 | IPv6 | — | JP | |
| 2001:200:700::/40 | IPv6 | — | JP | |
| 2001:200:800::/40 | IPv6 | — | JP | |
| 2001:200:a00::/39 | IPv6 | — | JP | |
| 2001:200:c00::/39 | IPv6 | — | JP | |
| 2001:200:f00::/40 | IPv6 | — | JP | |
| 2001:200:1000::/36 | IPv6 | — | JP | |
| 2001:200:2000::/35 | IPv6 | — | JP | |
| 2001:200:4000::/34 | IPv6 | — | JP | |
| 2001:200:8000::/34 | IPv6 | — | JP |