2,686 blocks registered in Japan.

🇯🇵 1Finity Inc 38:A3:E0:00:00:00 /24 MA-L 🇯🇵 1Finity Inc. 8C:1F:64:EB:40:00 /36 MA-S 🇯🇵 A&D Co., Ltd. 00:09:1F:00:00:00 /24 MA-L 🇯🇵 A&T Corporation 70:B3:D5:32:E0:00 /36 MA-S 🇯🇵 A&T Corporation 8C:1F:64:BC:B0:00 /36 MA-S 🇯🇵 A&T Corporation, Electrics Group , LAS R&D Unit, 00:50:C2:D6:A0:00 /36 IAB 🇯🇵 A-One Co., Ltd. 00:03:82:00:00:00 /24 MA-L 🇯🇵 A2 CORPORATION 00:10:43:00:00:00 /24 MA-L 🇯🇵 Abalance Corporation 70:B3:D5:07:F0:00 /36 MA-S 🇯🇵 ABIT CORPORATION 00:C0:EF:00:00:00 /24 MA-L 🇯🇵 ACCEL CORP 70:B3:D5:53:D0:00 /36 MA-S 🇯🇵 ACCEL LAB ltd. D0:AA:5F:20:00:00 /28 MA-M 🇯🇵 Accense Technology, Inc. 00:17:66:00:00:00 /24 MA-L 🇯🇵 ACCESS CO., LTD. 00:80:32:00:00:00 /24 MA-L 🇯🇵 ACOMA Medical Industry Co,. Ltd. F0:0D:F5:00:00:00 /24 MA-L 🇯🇵 Acrodea, Inc. 70:B3:D5:40:60:00 /36 MA-S 🇯🇵 Acrodea, Inc. 70:B3:D5:4A:80:00 /36 MA-S 🇯🇵 Acrodea, Inc. 70:B3:D5:67:D0:00 /36 MA-S 🇯🇵 Acrodea, Inc. 70:B3:D5:6A:40:00 /36 MA-S 🇯🇵 Acrodea, Inc. 70:B3:D5:E7:90:00 /36 MA-S 🇯🇵 ACSL Ltd. 8C:1F:64:A2:D0:00 /36 MA-S 🇯🇵 Active Brains D8:09:4E:00:00:00 /24 MA-L 🇯🇵 Active Brains 64:31:39:40:00:00 /28 MA-M 🇯🇵 Active Brains 70:B3:D5:2B:A0:00 /36 MA-S 🇯🇵 Active Tchnology Corporation 00:0A:2C:00:00:00 /24 MA-L 🇯🇵 ACTIVIO Inc. A4:5E:5A:00:00:00 /24 MA-L 🇯🇵 Actlas Inc. 44:EA:4B:00:00:00 /24 MA-L 🇯🇵 Acutelogic Corporation 00:50:C2:49:60:00 /36 IAB 🇯🇵 AD SYSTEMS CORP. 00:50:D5:00:00:00 /24 MA-L 🇯🇵 Ad-Sol Nissin Corp 10:6F:EF:00:00:00 /24 MA-L 🇯🇵 Adachi-Syokai Co., Ltd. 00:27:16:00:00:00 /24 MA-L 🇯🇵 ADC Corporation EC:42:B4:00:00:00 /24 MA-L 🇯🇵 ADC Techonology 00:09:E7:00:00:00 /24 MA-L 🇯🇵 ADDO-Japan Corporation 00:0F:85:00:00:00 /24 MA-L 🇯🇵 ADiCo Corporation 8C:1F:64:D6:90:00 /36 MA-S 🇯🇵 AdInte, inc. 70:B3:D5:BA:C0:00 /36 MA-S 🇯🇵 Adtec Corporation 00:02:29:00:00:00 /24 MA-L 🇯🇵 ADTECHNO Inc. F8:1D:78:10:00:00 /28 MA-M 🇯🇵 ADTEK System Science Co., Ltd. 00:01:7E:00:00:00 /24 MA-L 🇯🇵 ADVALY SYSTEM Inc. 30:5D:A6:00:00:00 /24 MA-L 🇯🇵 ADVALY SYSTEM Inc. 40:D8:55:0A:10:00 /36 IAB 🇯🇵 Advanced Communications Co., Ltd. 00:03:D5:00:00:00 /24 MA-L 🇯🇵 Advanced Design Technology co.,ltd. E0:16:B1:00:00:00 /24 MA-L 🇯🇵 ADVANCED INFORMATION 00:80:B0:00:00:00 /24 MA-L 🇯🇵 ADVANCED PERIPHERALS TECHNOLOGIES, INC. 00:A0:7A:00:00:00 /24 MA-L 🇯🇵 Advanced Photonics, Inc. B8:DA:F7:00:00:00 /24 MA-L 🇯🇵 Advanced Systems Co., Ltd. 00:05:41:00:00:00 /24 MA-L 🇯🇵 Advanced Technology & Systems 00:30:7A:00:00:00 /24 MA-L 🇯🇵 Advanced Telecommunications Research Institute International 70:B3:D5:68:A0:00 /36 MA-S 🇯🇵 ADVANET INC. 00:10:71:00:00:00 /24 MA-L 🇯🇵 ADVAS CO., LTD. 70:1A:ED:00:00:00 /24 MA-L 🇯🇵 Aeterlink Corp. 34:B5:F3:B0:00:00 /28 MA-M 🇯🇵 Aggregate Co.,Ltd. 58:20:8A:30:00:00 /28 MA-M 🇯🇵 Agri-hitech LLC 00:50:C2:E5:80:00 /36 IAB 🇯🇵 AI SECURITY Co.Ltd. 8C:A6:82:00:00:00 /28 MA-M 🇯🇵 AI TECHNOLOGY CO.,LTD. 6C:97:AA:00:00:00 /24 MA-L 🇯🇵 AICHI ELECTRIC CO., LTD. 00:11:37:00:00:00 /24 MA-L 🇯🇵 AIDONIC Corporation 00:06:DF:00:00:00 /24 MA-L 🇯🇵 AILES ELECTRONICS CO., LTD. 00:50:C2:BF:50:00 /36 IAB 🇯🇵 AIM Co.,Ltd 00:50:C2:C7:70:00 /36 IAB 🇯🇵 AIOI Systems Co., Ltd. 00:1D:C4:00:00:00 /24 MA-L 🇯🇵 AIOI Systems Co., Ltd. 00:50:C2:1B:D0:00 /36 IAB 🇯🇵 Aiphone co.,Ltd 00:0B:AA:00:00:00 /24 MA-L 🇯🇵 AIRFOLC,INC. 00:50:C2:CF:D0:00 /36 IAB 🇯🇵 AISIN CORPORATION 00:1E:43:00:00:00 /24 MA-L 🇯🇵 AITEC Corporation 8C:1F:64:E3:A0:00 /36 MA-S 🇯🇵 AITEC SYSTEM CO., LTD. E0:5A:9F:10:00:00 /28 MA-M 🇯🇵 Aitecsystem Co.,Ltd. 00:50:C2:BC:A0:00 /36 IAB 🇯🇵 AIWA CO., LTD. 00:50:71:00:00:00 /24 MA-L 🇯🇵 Aiware Inc. 00:12:95:00:00:00 /24 MA-L 🇯🇵 AKAI Professional M.I. Corp. 00:20:C7:00:00:00 /24 MA-L 🇯🇵 AKASAKATEC INC. 70:B3:D5:D8:30:00 /36 MA-S 🇯🇵 AKATSUKI ELECTRIC MFG.CO.,LTD. 00:0C:F4:00:00:00 /24 MA-L 🇯🇵 AKEBONO BRAKE INDUSTRY CO.,LTD. 10:1A:92:00:00:00 /24 MA-L 🇯🇵 AKITA ELECTRONICS SYSTEMS CO.,LTD. 00:0B:8F:00:00:00 /24 MA-L 🇯🇵 AKON Co.,Ltd. 8C:1F:64:FE:A0:00 /36 MA-S 🇯🇵 ALAXALA Networks Corporation 00:12:E2:00:00:00 /24 MA-L 🇯🇵 ALAXALA Networks Corporation D4:35:4A:00:00:00 /24 MA-L 🇯🇵 Alexon Co., Ltd. 00:06:4B:00:00:00 /24 MA-L 🇯🇵 ALFATECH, INC. 00:E0:3E:00:00:00 /24 MA-L 🇯🇵 ALGOSYSTEM Co., Ltd. 00:13:A0:00:00:00 /24 MA-L 🇯🇵 Alinco,incorporated 24:42:BC:00:00:00 /24 MA-L 🇯🇵 Alistel Inc. 00:08:DF:00:00:00 /24 MA-L 🇯🇵 Allied Telesis K.K. 00:1A:EB:00:00:00 /24 MA-L 🇯🇵 Allied Telesis K.K. 00:C2:8F:00:00:00 /24 MA-L 🇯🇵 ALLIED TELESIS, K.K. 00:90:99:00:00:00 /24 MA-L 🇯🇵 Allied-telesisK.K. 88:9D:98:00:00:00 /24 MA-L 🇯🇵 ALLUMER CO., LTD. 00:80:AF:00:00:00 /24 MA-L 🇯🇵 almedio inc. 00:0A:5F:00:00:00 /24 MA-L 🇯🇵 ALNETz Co.,LTD C0:D3:91:70:00:00 /28 MA-M 🇯🇵 ALPHA Corporation 84:B3:86:60:00:00 /28 MA-M 🇯🇵 ALPHA Corporation 00:50:C2:D6:C0:00 /36 IAB 🇯🇵 ALPHA Corporation 8C:1F:64:8E:20:00 /36 MA-S 🇯🇵 ALPHA DESIGN CO.,LTD. 40:D8:55:10:80:00 /36 IAB 🇯🇵 ALPHA PROJECT Co.,Ltd. 00:0C:7B:00:00:00 /24 MA-L 🇯🇵 AlphaMedia Co., Ltd 00:50:C2:0C:C0:00 /36 IAB 🇯🇵 AlphaTheta Corporation C8:3D:FC:00:00:00 /24 MA-L 🇯🇵 ALPHA　Corporation 70:B3:D5:D6:70:00 /36 MA-S 🇯🇵 Alpine Electronics Marketing, Inc. C4:98:94:40:00:00 /28 MA-M 🇯🇵 Alps Alpine 00:0A:08:00:00:00 /24 MA-L