Who owns MAC prefix 70B3D5B37?

70B3D5B37 is registered to CODEC Co., Ltd. in the IEEE MA-S registry.

What devices use 70B3D5B37?

Any network device with a MAC address starting 70:B3:D5:B3:7 was manufactured by or for CODEC Co., Ltd..

MA-S · OUI prefix

CODEC Co., Ltd.

Any MAC address starting 70:B3:D5:B3:7 is registered to CODEC Co., Ltd. in JP.

OUI prefix	70B3D5B37
Vendor	CODEC Co., Ltd.
Registry	MA-S (36-bit, small block)
Country	JP
Example MAC	70:B3:D5:B3:7:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D5B37 to CODEC 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:B3:7, it is CODEC Co., Ltd. hardware.

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