Who owns MAC prefix 70B3D5728?

70B3D5728 is registered to BCD Audio in the IEEE MA-S registry.

What devices use 70B3D5728?

Any network device with a MAC address starting 70:B3:D5:72:8 was manufactured by or for BCD Audio.

MA-S · OUI prefix

BCD Audio

Any MAC address starting 70:B3:D5:72:8 is registered to BCD Audio.

OUI prefix	70B3D5728
Vendor	BCD Audio
Registry	MA-S (36-bit, small block)
Example MAC	70:B3:D5:72:8:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D5728 to BCD Audio. 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:D5:72:8, it is BCD Audio hardware.

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