Top 20 organizations with the largest IP allocations in Japan
Top 20 organizations with the largest IP allocations
| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| Softbank BB Corp. | 69,213,184 | 1.06 x 244 | 1 | 786 | |
| NTT Communications Corporation | 29,073,152 | 242 | 7 | 296 | |
| KDDI CORPORATION | 18,505,280 | 1.25 x 241 | 1 | 569 | |
| 4 | Jupiter Telecommunication Co. Ltd | 10,250,240 | 233 | 1 | 255 |
| 5 | Asia Pacific Network Information Centre | 9,166,293 | 1.06 x 233 | 3 | 623 |
| 6 | UCOM Corp. | 5,508,096 | 232 | 1 | 41 |
| 7 | Jupiter Telecommunications Co., Ltd. | 4,073,472 | 234 | 9 | 410 |
| 8 | Internet Initiative Japan Inc. | 3,802,624 | 1.03 x 234 | 1 | 197 |
| 9 | BIGLOBE Inc. | 3,674,624 | 1.13 x 235 | 1 | 37 |
| 10 | So-net Entertainment Corporation | 3,601,408 | 1.22 x 237 | 1 | 92 |
| 11 | OPTAGE Inc. | 3,144,448 | 233 | 2 | 86 |
| 12 | FUJITSU LIMITED | 3,072,512 | 232 | 1 | 49 |
| 13 | NTT DOCOMO, INC. | 2,766,848 | 233 | 1 | 1,065 |
| 14 | Ymobile Corporation | 2,746,368 | 0 | 1 | 70 |
| 15 | 2,231,296 | 1.02 x 235 | 21 | 437 | |
| 16 | NTT PC Communications, Inc. | 2,074,624 | 1.56 x 233 | 1 | 162 |
| 17 | SoftBank Mobile Corp. | 2,062,592 | 232 | 2 | 200 |
| 18 | FreeBit Co.,Ltd. | 1,874,432 | 233 | 1 | 304 |
| 19 | NTT-ME Corporation | 1,759,488 | 242 | 1 | 52 |
| 20 | ARTERIA Networks Corporation | 1,722,624 | 1.5 x 236 | 1 | 210 |
