Who owns MAC prefix 70B3D54B0?

70B3D54B0 is registered to Tecogen Inc. in the IEEE MA-S registry.

What devices use 70B3D54B0?

Any network device with a MAC address starting 70:B3:D5:4B:0 was manufactured by or for Tecogen Inc..

MA-S · OUI prefix

Tecogen Inc.

Any MAC address starting 70:B3:D5:4B:0 is registered to Tecogen Inc. in US.

OUI prefix	70B3D54B0
Vendor	Tecogen Inc.
Registry	MA-S (36-bit, small block)
Country	US
Example MAC	70:B3:D5:4B:0:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D54B0 to Tecogen Inc.. 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:D5:4B:0, it is Tecogen Inc. hardware.

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