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. | 69,460,480 | 1.06 x 244 | 1 | 775 | |
| NTT Communications Corporation | 29,103,104 | 242 | 9 | 291 | |
| KDDI CORPORATION | 18,505,024 | 1.25 x 241 | 1 | 568 | |
| 4 | Jupiter Telecommunication Co. Ltd | 10,332,160 | 233 | 1 | 260 |
| 5 | Research Organization of Information and Systems, National Institute of Informa | 9,185,253 | 233 | 1 | 628 |
| 6 | ARTERIA Networks Corporation | 7,243,776 | 1.56 x 236 | 4 | 258 |
| 7 | Jupiter Telecommunications Co., Ltd. | 4,007,936 | 234 | 9 | 404 |
| 8 | Internet Initiative Japan Inc. | 3,868,672 | 1.03 x 234 | 1 | 200 |
| 9 | So-net Entertainment Corporation | 3,765,248 | 1.22 x 237 | 1 | 109 |
| 10 | BIGLOBE Inc. | 3,674,624 | 1.13 x 235 | 1 | 37 |
| 11 | OPTAGE Inc. | 3,144,448 | 233 | 2 | 86 |
| 12 | FUJITSU LIMITED | 3,072,768 | 232 | 1 | 51 |
| 13 | NTT DOCOMO, INC. | 2,771,712 | 233 | 1 | 1,074 |
| 14 | Ymobile Corporation | 2,746,368 | 0 | 1 | 70 |
| 15 | NTT PC Communications, Inc. | 2,279,424 | 1.56 x 233 | 1 | 170 |
| 16 | SoftBank Mobile Corp. | 2,062,336 | 232 | 2 | 199 |
| 17 | FreeBit Co.,Ltd. | 1,866,240 | 233 | 1 | 304 |
| 18 | NTT-ME Corporation | 1,759,488 | 242 | 1 | 52 |
| 19 | Amazon.com, Inc. | 1,659,648 | 1.13 x 232 | 1 | 264 |
| 20 | TOKAI Communications Corporation | 1,566,976 | 1.31 x 235 | 1 | 170 |