Vendor directory

2,698 blocks registered in Japan.

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

Unique organizations1,910

Total blocks2,698

MA-L count1,929

MA-M count182

MA-S count387

IAB count193

CID count7

Total address capacity32,673,906,688

Last changed hereOct 1, 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	Blocks
Sony Corporation	86
Murata Manufacturing Co., Ltd.	78
Nintendo Co.,Ltd	63
YUYAMA MFG Co.,Ltd	50
Nintendo Co., Ltd.	47
Sony Interactive Entertainment Inc.	44
ALPSALPINE CO,.LTD	40
BUFFALO.INC	35
CANON INC.	25
Seiko Epson Corporation	22

Organization Prefix Type

🇯🇵 Alps Alpine 14:61:02:00:00:00 /24 MA-L 🇯🇵 Alps Alpine B8:9C:13:00:00:00 /24 MA-L 🇯🇵 Alps Alpine C4:4F:96:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 00:02:C7:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 00:06:F5:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 00:06:F7:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 00:07:04:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 00:16:FE:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 00:19:C1:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 00:1B:FB:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 00:1E:3D:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 00:21:4F:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 00:23:06:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 00:24:33:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 00:26:43:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 04:76:6E:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 04:98:F3:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 28:A1:83:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 30:C3:D9:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 30:DF:17:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 34:C7:31:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 38:C0:96:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 44:EB:2E:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 48:F0:7B:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 58:16:D7:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 60:38:0E:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 64:05:E4:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 64:D4:BD:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 74:95:EC:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 84:70:51:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 94:09:C9:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD 9C:8D:7C:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD AC:7A:4D:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD B4:EC:02:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD BC:42:8C:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD BC:75:36:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD C0:40:8D:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD C4:B7:57:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD E0:2D:F0:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD E0:AE:5E:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD EC:D9:09:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD FC:62:B9:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO,.LTD FC:98:16:00:00:00 /24 MA-L 🇯🇵 ALPSALPINE CO.,LTD. A0:5D:0E:00:00:00 /24 MA-L 🇯🇵 ALTECH CO., LTD. 00:20:55:00:00:00 /24 MA-L 🇯🇵 AMADA CO., LTD 00:60:D5:00:00:00 /24 MA-L 🇯🇵 amakidenki 70:B3:D5:9F:D0:00 /36 MA-S 🇯🇵 AMANO CORPORATION 00:50:88:00:00:00 /24 MA-L 🇯🇵 ambie corporation 28:EB:B7:00:00:00 /24 MA-L 🇯🇵 amnimo Inc. E8:1B:4B:00:00:00 /24 MA-L 🇯🇵 AMPERE INCORPORATED 00:00:7C:00:00:00 /24 MA-L 🇯🇵 AMS 00:50:C2:B3:D0:00 /36 IAB 🇯🇵 AndFun Co.,Ltd. 70:B3:D5:BE:80:00 /36 MA-S 🇯🇵 Ando Electric Corporation 00:01:E2:00:00:00 /24 MA-L 🇯🇵 ANDOR SYSTEM SUPPORT CO., LTD. 00:1E:88:00:00:00 /24 MA-L 🇯🇵 ANRITSU CORPORATION 00:00:91:00:00:00 /24 MA-L 🇯🇵 Anywire corporation 34:2F:6E:00:00:00 /24 MA-L 🇯🇵 APISTE CORPORATION 74:E4:24:00:00:00 /24 MA-L 🇯🇵 Aplix IP Holdings Corporation 00:1C:4D:00:00:00 /24 MA-L 🇯🇵 APOLLO GIKEN Co.,Ltd. 70:B3:D5:3E:90:00 /36 MA-S 🇯🇵 Apollo Seiko Ltd. 14:44:4A:00:00:00 /24 MA-L 🇯🇵 Application Technologies and Engineering Research Laboratory 00:13:83:00:00:00 /24 MA-L 🇯🇵 APRESIA Systems Ltd 00:40:66:00:00:00 /24 MA-L 🇯🇵 APRESIA Systems, Ltd. FC:6D:D1:00:00:00 /24 MA-L 🇯🇵 AR'S CO., LTD. 00:50:C2:76:00:00 /36 IAB 🇯🇵 Archermind Japan Co.,Ltd. C4:A5:59:00:00:00 /28 MA-M 🇯🇵 ARKRAY, Inc. Kyoto Laboratory 00:50:C2:B7:30:00 /36 IAB 🇯🇵 ARKRAY, Inc. Kyoto Laboratory 70:B3:D5:C4:E0:00 /36 MA-S 🇯🇵 ARKRAY,Inc.Kyoto Laboratory 8C:1F:64:CB:70:00 /36 MA-S 🇯🇵 ARP Corporation 70:B3:D5:B8:80:00 /36 MA-S 🇯🇵 Array Corporation 40:D8:55:18:80:00 /36 IAB 🇯🇵 Arrow7 Corporation 00:19:B1:00:00:00 /24 MA-L 🇯🇵 ART Finex Co.,Ltd. FC:E4:98:20:00:00 /28 MA-M 🇯🇵 ART JAPAN CO., LTD. 00:09:F9:00:00:00 /24 MA-L 🇯🇵 Artiza Networks Inc 00:60:90:00:00:00 /24 MA-L 🇯🇵 ARTRAY CO., LTD. 00:26:C1:00:00:00 /24 MA-L 🇯🇵 ARUZE Corporation 00:12:18:00:00:00 /24 MA-L 🇯🇵 Asahi Electronics Co.,Ltd 50:2E:CE:00:00:00 /24 MA-L 🇯🇵 Asahi Net, Inc. 94:3D:C9:00:00:00 /24 MA-L 🇯🇵 Asahi-Engineering Co., Ltd. 00:05:B3:00:00:00 /24 MA-L 🇯🇵 ASAHIKASEI TECHNOSYSTEM CO.,LTD. 00:0D:20:00:00:00 /24 MA-L 🇯🇵 Ascent Corporation 00:0B:8E:00:00:00 /24 MA-L 🇯🇵 Ascon Ltd. FC:CC:E4:00:00:00 /24 MA-L 🇯🇵 Aska International Inc. 00:0A:8F:00:00:00 /24 MA-L 🇯🇵 ASR Co,.Ltd. BC:D9:40:00:00:00 /24 MA-L 🇯🇵 Association of Musical Electronics Industry 00:01:F6:00:00:00 /24 MA-L 🇯🇵 Aster Electric Co.,Ltd. 00:50:C2:FD:30:00 /36 IAB 🇯🇵 Astrodesign, Inc. 00:02:DE:00:00:00 /24 MA-L 🇯🇵 Asumo Co.,Ltd. 00:24:C2:00:00:00 /24 MA-L 🇯🇵 Atel Corporation 00:50:C2:98:40:00 /36 IAB 🇯🇵 Atelier Vision Corporation 68:9A:B7:00:00:00 /24 MA-L 🇯🇵 ATL-SD 70:B3:D5:B7:60:00 /36 MA-S 🇯🇵 Atmark Techno, Inc. 00:11:0C:00:00:00 /24 MA-L 🇯🇵 ATOM GIKEN Co.,Ltd. 00:50:C2:26:60:00 /36 IAB 🇯🇵 ATOM GIKEN Co.,Ltd. 00:50:C2:E7:B0:00 /36 IAB 🇯🇵 ATOM GIKEN Co.,Ltd. 70:B3:D5:7D:90:00 /36 MA-S 🇯🇵 ATOM GIKEN Co.,Ltd. 70:B3:D5:AC:50:00 /36 MA-S 🇯🇵 ATOM tech Inc. 7C:DD:E9:00:00:00 /24 MA-L 🇯🇵 ATOMIC Corporation 00:14:40:00:00:00 /24 MA-L 🇯🇵 Atonarp Inc. 8C:1F:64:42:A0:00 /36 MA-S