Vendor directory

2,700 blocks registered in Japan.

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Every MA-L, MA-M, MA-S, IAB, and CID block IEEE has ever assigned to a named organization, browsable or searchable.

Unique organizations1,911
Total blocks2,700
MA-L count1,929
MA-M count183
MA-S count388
IAB count193
CID count7
Total address capacity32,674,959,360
Last changed hereOct 7, 2026

Country reflects the address published in the IEEE registration record. It does not indicate where a device was manufactured, sold, located or currently used.

Largest organizations in Japan

Organization Prefix Type
🇯🇵 e-w/you Inc. 00:0F:BE:00:00:00 /24 MA-L 🇯🇵 E3 Enterprise 58:49:25:00:00:00 /24 MA-L 🇯🇵 E3 Technology, Inc. 44:2A:FF:00:00:00 /24 MA-L 🇯🇵 Earth Works 70:B3:D5:61:C0:00 /36 MA-S 🇯🇵 Ease Inc. 00:50:C2:FD:80:00 /36 IAB 🇯🇵 EBRAINS Inc 00:20:0F:00:00:00 /24 MA-L 🇯🇵 ECHO ELETRIC CO. LTD. 00:10:47:00:00:00 /24 MA-L 🇯🇵 Ecolonum Inc. 70:B3:D5:30:E0:00 /36 MA-S 🇯🇵 EDEC CO., LTD. 00:60:14:00:00:00 /24 MA-L 🇯🇵 EDIC Systems Inc. 0C:CD:FB:00:00:00 /24 MA-L 🇯🇵 EDM Corporation 00:17:A8:00:00:00 /24 MA-L 🇯🇵 eflow Inc. / Smart Device Planning and Development Division 94:BF:1E:00:00:00 /24 MA-L 🇯🇵 Eiden Co.,Ltd. 70:B3:D5:16:70:00 /36 MA-S 🇯🇵 Eiden Co.,Ltd. 8C:1F:64:1C:E0:00 /36 MA-S 🇯🇵 Eiden Co.,Ltd. 8C:1F:64:3D:70:00 /36 MA-S 🇯🇵 Eiki Industrial Co. Ltd. 00:0B:2C:00:00:00 /24 MA-L 🇯🇵 Eintechno Corporation 2C:91:27:00:00:00 /24 MA-L 🇯🇵 eiraku electric corp. 00:1B:C5:04:D0:00 /36 MA-S 🇯🇵 Eishin Electronics 00:16:68:00:00:00 /24 MA-L 🇯🇵 EITO ELECTRONICS CO., LTD. 08:68:EA:00:00:00 /24 MA-L 🇯🇵 EIWA GIKEN INC. 70:B3:D5:BA:40:00 /36 MA-S 🇯🇵 EIZO Corporation 00:90:93:00:00:00 /24 MA-L 🇯🇵 elab-experience inc. 00:17:AA:00:00:00 /24 MA-L 🇯🇵 ELECOM CO., LTD 48:04:9F:00:00:00 /24 MA-L 🇯🇵 ELECOM CO., LTD. (LANEED DIV.) 00:90:FE:00:00:00 /24 MA-L 🇯🇵 ELECOM CO.,LTD 48:F7:3C:00:00:00 /24 MA-L 🇯🇵 ELECOM Co.,LTD Laneed Division 00:0F:95:00:00:00 /24 MA-L 🇯🇵 ELECOM CO.,LTD. 04:AB:18:00:00:00 /24 MA-L 🇯🇵 ELECOM CO.,LTD. 38:97:A4:00:00:00 /24 MA-L 🇯🇵 ELECOM CO.,LTD. BC:5C:4C:00:00:00 /24 MA-L 🇯🇵 Elecs Industry Co., Ltd. 00:08:9C:00:00:00 /24 MA-L 🇯🇵 Electronics Design Services, Co., Ltd. 00:13:9F:00:00:00 /24 MA-L 🇯🇵 Eletex Co., Ltd. 00:07:F4:00:00:00 /24 MA-L 🇯🇵 ELIIY Power CO., Ltd. 2C:35:57:00:00:00 /24 MA-L 🇯🇵 ELM DATA Co., Ltd. 00:19:90:00:00:00 /24 MA-L 🇯🇵 ELM Inc. 00:0B:ED:00:00:00 /24 MA-L 🇯🇵 ELMEX Co., LTD. 00:01:60:00:00:00 /24 MA-L 🇯🇵 ELMIC SYSTEMS, INC. 00:60:D8:00:00:00 /24 MA-L 🇯🇵 ELMO COMPANY, LIMITED 00:09:9A:00:00:00 /24 MA-L 🇯🇵 ELSA Japan Inc. 3C:39:E7:30:00:00 /28 MA-M 🇯🇵 Embedded Arts Co., Ltd. 70:B3:D5:0C:60:00 /36 MA-S 🇯🇵 Embedded System Corporation 00:07:71:00:00:00 /24 MA-L 🇯🇵 Embedded Technology Corporation 40:D8:55:1E:00:00 /36 IAB 🇯🇵 Empacket Corporation 00:1C:90:00:00:00 /24 MA-L 🇯🇵 ENABLER LTD. 70:B3:D5:15:A0:00 /36 MA-S 🇯🇵 ENEGATE Co.,Ltd. 00:03:FB:00:00:00 /24 MA-L 🇯🇵 ENERES Co.,Ltd. B8:BB:6D:00:00:00 /24 MA-L 🇯🇵 Enestone Corporation 8C:1F:64:2F:D0:00 /36 MA-S 🇯🇵 Eno Inc. D8:62:DB:00:00:00 /24 MA-L 🇯🇵 Entis Co., Ltd. 14:54:12:00:00:00 /24 MA-L 🇯🇵 Equos Research Co., Ltd 70:B3:D5:34:D0:00 /36 MA-S 🇯🇵 ERMINE Corporation 70:B3:D5:D7:30:00 /36 MA-S 🇯🇵 eSOL Co.,Ltd. 70:B3:D5:45:E0:00 /36 MA-S 🇯🇵 ESP-Planning Co. 00:50:C2:84:60:00 /36 IAB 🇯🇵 Espec Corp. 38:BF:2F:00:00:00 /24 MA-L 🇯🇵 ESTEC Co.,Ltd. 00:50:C2:6B:E0:00 /36 IAB 🇯🇵 ESTIC Corporation 00:19:84:00:00:00 /24 MA-L 🇯🇵 Etani Electronics Co.,Ltd. 00:50:C2:6D:40:00 /36 IAB 🇯🇵 Euphonic Technologies, Inc. 00:26:79:00:00:00 /24 MA-L 🇯🇵 EVIDENT CORPORATION 30:B2:9F:00:00:00 /24 MA-L 🇯🇵 Exfrontier Co., Ltd. 70:B3:D5:E7:40:00 /36 MA-S 🇯🇵 Expert Magnetics Corp. 00:30:ED:00:00:00 /24 MA-L 🇯🇵 Explorer Inc. 00:50:C2:A6:B0:00 /36 IAB 🇯🇵 Explorer Inc. 70:B3:D5:E8:50:00 /36 MA-S 🇯🇵 EXSCEED CORPRATION 00:80:FD:00:00:00 /24 MA-L 🇯🇵 EyeCross Co.,Inc. 00:0B:DA:00:00:00 /24 MA-L 🇯🇵 F-domain corporation 70:B3:D5:8C:20:00 /36 MA-S 🇯🇵 FACIT K.K. 00:10:CB:00:00:00 /24 MA-L 🇯🇵 FACTORY FIVE Corporation BC:26:A1:00:00:00 /24 MA-L 🇯🇵 Faculty of Science and Technology, Keio University 00:0C:21:00:00:00 /24 MA-L 🇯🇵 Fairy Devices Inc. 94:C9:B7:00:00:00 /28 MA-M 🇯🇵 FairyDevices Inc. 00:50:C2:F4:10:00 /36 IAB 🇯🇵 FAL Corp 00:50:C2:EC:B0:00 /36 IAB 🇯🇵 Farmage Co., Ltd. 44:23:AA:00:00:00 /24 MA-L 🇯🇵 Fast Co., Ltd. 58:DB:8D:00:00:00 /24 MA-L 🇯🇵 FCL COMPONENTS LIMITED BC:31:98:A0:00:00 /28 MA-M 🇯🇵 FCNT LLC 18:18:8B:00:00:00 /24 MA-L 🇯🇵 FCNT LLC B8:D0:F0:00:00:00 /24 MA-L 🇯🇵 FCNT LLC E4:D3:AA:00:00:00 /24 MA-L 🇯🇵 FDK Co., Ltd 00:50:AE:00:00:00 /24 MA-L 🇯🇵 FEITIAN CO.,LTD. 70:B3:D5:E2:60:00 /36 MA-S 🇯🇵 FG-Lab Inc. 08:F8:0D:40:00:00 /28 MA-M 🇯🇵 Fibergate Inc. 98:2D:BA:00:00:00 /24 MA-L 🇯🇵 Fibergate Inc. 38:F7:CD:B0:00:00 /28 MA-M 🇯🇵 Fibergate.Inc C8:8E:D1:50:00:00 /28 MA-M 🇯🇵 Field Design Inc. 70:B3:D5:8D:10:00 /36 MA-S 🇯🇵 Field Design Service 00:50:C2:7A:10:00 /36 IAB 🇯🇵 final Inc. 3C:23:19:00:00:00 /24 MA-L 🇯🇵 final Inc. 90:15:64:60:00:00 /28 MA-M 🇯🇵 Finesystem Co., Ltd 00:50:C2:35:10:00 /36 IAB 🇯🇵 First Design System Inc. 98:6E:E8:E0:00:00 /28 MA-M 🇯🇵 First Design System Inc. 40:D8:55:0A:70:00 /36 IAB 🇯🇵 First Design System Inc. 8C:1F:64:A7:20:00 /36 MA-S 🇯🇵 FIRSTTRUST Co.,Ltd. 00:50:C2:6E:00:00 /36 IAB 🇯🇵 FIT 8C:1F:64:6C:60:00 /36 MA-S 🇯🇵 Fixstars Corporation 70:F8:E7:C0:00:00 /28 MA-M 🇯🇵 FOR-A CO., LTD. 00:10:B1:00:00:00 /24 MA-L 🇯🇵 FORKS, INC. 00:40:3C:00:00:00 /24 MA-L 🇯🇵 Forties Inc. 2C:27:9E:B0:00:00 /28 MA-M 🇯🇵 FORVAL CREATIVE, INC. 00:C0:BB:00:00:00 /24 MA-L
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