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
Asia Pacific Network Information Centre 8,886,720 1.06 x 233 3 796
Jupiter Telecommunication Co. Ltd 4,745,216 232 1 183
Internet Initiative Japan Inc. 3,793,408 1.03 x 234 1 200
4 Pacnet Services (Japan) Corp. 148,120 232 4 134
5 Yahoo Japan 119,808 232 1 6
6 NHN Techorus Corp. 115,968 232 1 129
7 Yahoo Japan Corporation 108,544 0 1 49
8 MITSUI KNOWLEDGE INDUSTRY CO., LTD. 71,680 232 1 4
9 Wakayama University 65,536 0 1 1
10 National Institute for Fusion Science 65,536 0 1 1
11 Rakuten Mobile Network, Inc. 64,512 240 1 7
12 Rakuten Communications K.K. 60,160 232 2 14
13 Osaki Computer Engineering Co.Ltd 35,328 232 1 7
14 GATEWAY INC 26,112 0 1 50
15 Ace, Inc. 24,576 0 1 3
16 CLARA ONLINE, Inc. 24,576 232 1 12
17 mediatti broadband communications 24,576 0 1 13
18 Ishikawa Computer Center Co.,LTD. 23,552 232 1 13
19 Verizon Japan Limited 20,736 225 1 32
20 Industrial Cyber Security Center of Excellence 17,408 232 1 8