Who owns MAC prefix 70B3D5FB1?

70B3D5FB1 is registered to TOMEI TSUSHIN KOGYO CO,.LTD in the IEEE MA-S registry.

What devices use 70B3D5FB1?

Any network device with a MAC address starting 70:B3:D5:FB:1 was manufactured by or for TOMEI TSUSHIN KOGYO CO,.LTD.

MA-S · OUI prefix

TOMEI TSUSHIN KOGYO CO,.LTD

Any MAC address starting 70:B3:D5:FB:1 is registered to TOMEI TSUSHIN KOGYO CO,.LTD in JP.

OUI prefix	70B3D5FB1
Vendor	TOMEI TSUSHIN KOGYO CO,.LTD
Registry	MA-S (36-bit, small block)
Country	JP
Example MAC	70:B3:D5:FB:1:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D5FB1 to TOMEI TSUSHIN KOGYO CO,.LTD. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 70:B3:D5:FB:1, it is TOMEI TSUSHIN KOGYO CO,.LTD hardware.

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