2,686 blocks registered in Japan.

🇯🇵 Hosiden Corporation D0:09:F5:00:00:00 /24 MA-L 🇯🇵 Houwa System Design Corp. 3C:99:8C:00:00:00 /24 MA-L 🇯🇵 HOW CORPORATION 00:08:D7:00:00:00 /24 MA-L 🇯🇵 HOYA Corporation 00:02:AD:00:00:00 /24 MA-L 🇯🇵 HOYA SERVICE CORPORATION 44:87:23:00:00:00 /24 MA-L 🇯🇵 HRCP Research and Development Partnership 08:F7:E9:00:00:00 /24 MA-L 🇯🇵 HUDSON SOFT CO.,LTD. 00:09:CD:00:00:00 /24 MA-L 🇯🇵 Human Assembler, Inc. AC:58:3B:00:00:00 /24 MA-L 🇯🇵 Human-life Information Platforms Institute 60:A4:34:40:00:00 /28 MA-M 🇯🇵 HuMANDATA LTD. 00:09:EB:00:00:00 /24 MA-L 🇯🇵 Humo Laboratory,Ltd. 00:11:84:00:00:00 /24 MA-L 🇯🇵 Hypex Electronics BV 70:B3:D5:28:70:00 /36 MA-S 🇯🇵 Hytec Inter Co., Ltd. D8:D4:E6:00:00:00 /24 MA-L 🇯🇵 I-O DATA, INC. 00:A0:B0:00:00:00 /24 MA-L 🇯🇵 I-O DATA, INC. 34:76:C5:00:00:00 /24 MA-L 🇯🇵 I-O DATA, INC. 50:41:B9:00:00:00 /24 MA-L 🇯🇵 i-PRO Co., Ltd. D4:2D:C5:00:00:00 /24 MA-L 🇯🇵 I-TEC Co., Ltd. 00:25:EF:00:00:00 /24 MA-L 🇯🇵 I-Tech corporation 00:25:AC:00:00:00 /24 MA-L 🇯🇵 i2-electronics 70:B3:D5:59:E0:00 /36 MA-S 🇯🇵 IAI Corporation B8:DC:87:00:00:00 /24 MA-L 🇯🇵 IBM JAPAN, FUJISAWA MT+D 00:10:D9:00:00:00 /24 MA-L 🇯🇵 iBWorld co.,ltd. 00:50:C2:F4:00:00 /36 IAB 🇯🇵 ICA Inc. 00:08:04:00:00:00 /24 MA-L 🇯🇵 ICM CO. LTD. 00:40:04:00:00:00 /24 MA-L 🇯🇵 ICOM INC. 00:90:C7:00:00:00 /24 MA-L 🇯🇵 iD corporation 58:A7:6F:00:00:00 /24 MA-L 🇯🇵 ID Tech Japan Co.,Ltd. F0:D7:AF:00:00:00 /28 MA-M 🇯🇵 idaqs Co.,Ltd. 70:B3:D5:63:40:00 /36 MA-S 🇯🇵 Idea System Co., Ltd. 00:07:87:00:00:00 /24 MA-L 🇯🇵 IDEC IZUMI Corporation 00:03:7B:00:00:00 /24 MA-L 🇯🇵 IDK Corporation 00:08:E5:00:00:00 /24 MA-L 🇯🇵 IDX Company, Ltd. 00:1F:17:00:00:00 /24 MA-L 🇯🇵 IDY Corporation 1C:06:56:00:00:00 /24 MA-L 🇯🇵 iFORCOM Co., Ltd 34:83:02:00:00:00 /24 MA-L 🇯🇵 IHI Inspection & Instrumentation Co., Ltd. 70:B3:D5:34:40:00 /36 MA-S 🇯🇵 IHI Inspection & Instrumentation Co.,Ltd. 8C:1F:64:DE:60:00 /36 MA-S 🇯🇵 IHI Rotating Machinery Engineering Co.,Ltd. 70:B3:D5:89:C0:00 /36 MA-S 🇯🇵 IHI Scube Co.,Ltd 00:50:C2:E1:50:00 /36 IAB 🇯🇵 Iiga co.,Ltd 00:0E:B8:00:00:00 /24 MA-L 🇯🇵 Ikegami Tsushinki Co., Ltd. 00:05:2A:00:00:00 /24 MA-L 🇯🇵 ikegawa co., Ltd B0:47:5E:C0:00:00 /28 MA-M 🇯🇵 IMAGE DATA PROCESSING SYSTEM GROUP 00:A0:06:00:00:00 /24 MA-L 🇯🇵 IMAGE TECH CO.,LTD 70:B3:D5:57:80:00 /36 MA-S 🇯🇵 Imagenet Co.,Ltd 8C:1F:64:E0:80:00 /36 MA-S 🇯🇵 Imagenics, Co., Ltd. 00:03:30:00:00:00 /24 MA-L 🇯🇵 Imagine Inc. 70:B3:D5:3D:20:00 /36 MA-S 🇯🇵 iMercury F8:5B:9B:00:00:00 /24 MA-L 🇯🇵 ImpactSystems 00:50:C2:BB:C0:00 /36 IAB 🇯🇵 IMV Corporation 00:17:1F:00:00:00 /24 MA-L 🇯🇵 Inaba Techno Evolution Co.,Ltd 8C:1F:64:13:D0:00 /36 MA-S 🇯🇵 Infinico Corporation 00:0E:F2:00:00:00 /24 MA-L 🇯🇵 Information System Research Institute,Inc. CC:5D:57:00:00:00 /24 MA-L 🇯🇵 INFORMATION INTERNATIONAL, INC 00:00:9B:00:00:00 /24 MA-L 🇯🇵 Infosocket Co., Ltd. 70:B3:D5:C0:A0:00 /36 MA-S 🇯🇵 Infoware System Co., Ltd. 00:07:7A:00:00:00 /24 MA-L 🇯🇵 Innocent Technology Co., Ltd. 50:6E:92:00:00:00 /24 MA-L 🇯🇵 Innotech Corporation 00:19:5C:00:00:00 /24 MA-L 🇯🇵 Innovation Farm, Inc. 00:23:E6:00:00:00 /24 MA-L 🇯🇵 INTEC Inc. 4A:7F:74:00:00:00 /24 CID 🇯🇵 IntelliVoice Co.,Ltd. EC:23:68:00:00:00 /24 MA-L 🇯🇵 Inter Action Corporation 3C:24:F0:60:00:00 /28 MA-M 🇯🇵 InterBridge,Inc. 00:50:C2:38:B0:00 /36 IAB 🇯🇵 Intercom, Inc. DC:9B:1E:00:00:00 /24 MA-L 🇯🇵 InterEnergy Co.Ltd, 00:11:81:00:00:00 /24 MA-L 🇯🇵 INTERFACE CO. 00:80:62:00:00:00 /24 MA-L 🇯🇵 Interface Co., Ltd. 00:09:A2:00:00:00 /24 MA-L 🇯🇵 Intermind Inc. 70:B3:D5:4A:50:00 /36 MA-S 🇯🇵 International Center for Elementary Particle Physics, The University of Tokyo 70:B3:D5:F9:E0:00 /36 MA-S 🇯🇵 International Test & Engineering Services Co.,Ltd. 00:50:C2:1B:F0:00 /36 IAB 🇯🇵 INTERNET INITIATIVE JAPAN, INC 00:E0:4D:00:00:00 /24 MA-L 🇯🇵 INTERNIX INC. 00:60:50:00:00:00 /24 MA-L 🇯🇵 Interplan Co., Ltd. 80:7B:85:A0:00:00 /28 MA-M 🇯🇵 INTERWARE CO., LTD. 00:40:70:00:00:00 /24 MA-L 🇯🇵 Inventure Inc. 00:50:C2:A2:D0:00 /36 IAB 🇯🇵 INX CO.,LTD. CC:D3:9D:00:00:00 /28 MA-M 🇯🇵 IONOS Co.,Ltd. 00:13:C7:00:00:00 /24 MA-L 🇯🇵 IP SQUARE Co, Ltd. 00:06:FA:00:00:00 /24 MA-L 🇯🇵 IPFLEX Inc. 00:09:FC:00:00:00 /24 MA-L 🇯🇵 IPFRONT Inc 00:07:4E:00:00:00 /24 MA-L 🇯🇵 IRI Ubiteq, INC. 00:1B:70:00:00:00 /24 MA-L 🇯🇵 IRIICHI TECHNOLOGIES Inc. 00:10:F7:00:00:00 /24 MA-L 🇯🇵 ISA CO., LTD. 00:A0:66:00:00:00 /24 MA-L 🇯🇵 ISB Corporation 04:BF:A8:00:00:00 /24 MA-L 🇯🇵 ISHIDA CO., LTD. 00:30:16:00:00:00 /24 MA-L 🇯🇵 ISHIDA MEDICAL CO., LTD. 64:0E:9B:00:00:00 /24 MA-L 🇯🇵 ISHIGAKI COMPUTER SYSTEM CO. 00:10:B8:00:00:00 /24 MA-L 🇯🇵 Ishii Tool & Engineering Corporation 00:24:0F:00:00:00 /24 MA-L 🇯🇵 IT Access Co., Ltd. 00:04:2B:00:00:00 /24 MA-L 🇯🇵 IT Farm Corporation 00:01:37:00:00:00 /24 MA-L 🇯🇵 IT-FACTORY, INC. 00:13:00:00:00:00 /24 MA-L 🇯🇵 ITC Networks 38:8A:B7:00:00:00 /24 MA-L 🇯🇵 ITF Co., Ltd. 00:23:1A:00:00:00 /24 MA-L 🇯🇵 ITFOR Inc. 00:0D:FC:00:00:00 /24 MA-L 🇯🇵 ITO CO., LTD. 00:10:0C:00:00:00 /24 MA-L 🇯🇵 ITO ELECTRIC INDUSTRY CO, LTD. 00:90:18:00:00:00 /24 MA-L 🇯🇵 ITOCHU Techno-Solutions Corporation DC:74:CE:00:00:00 /24 MA-L 🇯🇵 ITOH DENKI CO,LTD. 00:22:21:00:00:00 /24 MA-L 🇯🇵 ITT Co., Ltd. 00:07:FA:00:00:00 /24 MA-L 🇯🇵 ITUS JAPAN CO. LTD 00:26:9C:00:00:00 /24 MA-L