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. | 69,229,568 | 1.06 x 244 | 1 | 786 | |
| NTT Communications Corporation | 29,115,648 | 242 | 9 | 306 | |
| KDDI CORPORATION | 18,510,400 | 1.26 x 241 | 1 | 574 | |
| 4 | Jupiter Telecommunication Co. Ltd | 10,250,240 | 233 | 1 | 255 |
| 5 | Asia Pacific Network Information Centre | 9,166,805 | 1.06 x 233 | 3 | 621 |
| 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. | 3,858,688 | 1.03 x 234 | 1 | 173 |
| 9 | BIGLOBE Inc. | 3,674,624 | 1.13 x 235 | 1 | 37 |
| 10 | So-net Entertainment Corporation | 3,406,848 | 1.03 x 237 | 1 | 55 |
| 11 | OPTAGE Inc. | 3,145,984 | 233 | 2 | 87 |
| 12 | FUJITSU LIMITED | 3,072,512 | 232 | 1 | 49 |
| 13 | NTT DOCOMO, INC. | 2,761,728 | 1.01 x 233 | 1 | 1,061 |
| 14 | Ymobile Corporation | 2,746,368 | 0 | 1 | 70 |
| 15 | NTT PC Communications, Inc. | 2,074,624 | 1.56 x 233 | 1 | 162 |
| 16 | SoftBank Mobile Corp. | 2,070,784 | 232 | 2 | 201 |
| 17 | FreeBit Co.,Ltd. | 1,874,432 | 233 | 1 | 304 |
| 18 | NTT-ME Corporation | 1,759,488 | 242 | 1 | 52 |
| 19 | ARTERIA Networks Corporation | 1,690,368 | 1.5 x 236 | 1 | 211 |
| 20 | TOKAI Communications Corporation | 1,571,072 | 1.31 x 235 | 1 | 172 |
