Who owns MAC prefix 70B3D56B3?

70B3D56B3 is registered to DuraComm Corporation in the IEEE MA-S registry.

What devices use 70B3D56B3?

Any network device with a MAC address starting 70:B3:D5:6B:3 was manufactured by or for DuraComm Corporation.

MA-S · OUI prefix

DuraComm Corporation

Any MAC address starting 70:B3:D5:6B:3 is registered to DuraComm Corporation in US.

OUI prefix	70B3D56B3
Vendor	DuraComm Corporation
Registry	MA-S (36-bit, small block)
Country	US
Example MAC	70:B3:D5:6B:3:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D56B3 to DuraComm Corporation. 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:D5:6B:3, it is DuraComm Corporation hardware.

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