Internet Service Providers in Japan

Top 20 organizations with the largest IP allocations in Japan

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