| Name | IPv4 addresses | AS numbers |
|---|---|---|
| 45,408,000 | 1 | |
| 28,994,816 | 12 | |
| 17,932,032 | 3 | |
| 8,570,432 | 1 | |
| 5,382,143 | 1 | |
| 4,745,216 | 1 | |
| 3,796,992 | 1 | |
| 3,675,136 | 2 | |
| 3,275,776 | 1 | |
| 3,135,744 | 1 | |
| 3,089,152 | 1 | |
| 2,674,432 | 1 | |
| 2,164,224 | 3 | |
| 2,045,952 | 9 | |
| 2,037,504 | 2 | |
| 1,874,944 | 3 | |
| 1,644,032 | 1 | |
| 1,630,720 | 1 | |
| 1,553,152 | 1 | |
| 1,491,968 | 2 | |
| 1,433,600 | 2 | |
| 1,307,648 | 1 | |
| 1,092,096 | 11 | |
| 1,043,200 | 6 | |
| 905,216 | 1 | |
| 696,832 | 1 | |
| 453,632 | 1 | |
| 431,104 | 1 | |
| 404,480 | 1 | |
| 396,728 | 12 | |
| 360,448 | 1 | |
| 328,704 | 1 | |
| 328,448 | 6 | |
| 327,680 | 2 | |
| 327,168 | 1 | |
| 286,720 | 1 | |
| 279,808 | 1 | |
| 276,736 | 1 | |
| 258,048 | 2 | |
| 252,928 | 6 | |
| 234,496 | 3 | |
| 219,136 | 3 | |
| 215,552 | 1 | |
| 200,576 | 3 | |
| 199,936 | 1 | |
| 195,584 | 1 | |
| 194,816 | 1 | |
| 194,560 | 1 | |
| 186,880 | 2 | |
| 176,384 | 1 |
Country Report
Internet Service Providers in Japan
Top 50 organizations with the largest IP allocations in Japan