Who owns MAC prefix 70B3D599D?

70B3D599D is registered to Opsys-Tech in the IEEE MA-S registry.

What devices use 70B3D599D?

Any network device with a MAC address starting 70:B3:D5:99:D was manufactured by or for Opsys-Tech.

MA-S · OUI prefix

Opsys-Tech

Any MAC address starting 70:B3:D5:99:D is registered to Opsys-Tech in IL.

OUI prefix	70B3D599D
Vendor	Opsys-Tech
Registry	MA-S (36-bit, small block)
Country	IL
Example MAC	70:B3:D5:99:D:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D599D to Opsys-Tech. 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:D5:99:D, it is Opsys-Tech hardware.

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