Who owns MAC prefix 70B3D521D?

70B3D521D is registered to iRF - Intelligent RF Solutions, LLC in the IEEE MA-S registry.

What devices use 70B3D521D?

Any network device with a MAC address starting 70:B3:D5:21:D was manufactured by or for iRF - Intelligent RF Solutions, LLC.

MA-S · OUI prefix

iRF - Intelligent RF Solutions, LLC

Any MAC address starting 70:B3:D5:21:D is registered to iRF - Intelligent RF Solutions, LLC in US.

OUI prefix	70B3D521D
Vendor	iRF - Intelligent RF Solutions, LLC
Registry	MA-S (36-bit, small block)
Country	US
Example MAC	70:B3:D5:21:D:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D521D to iRF - Intelligent RF Solutions, LLC. 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:D5:21:D, it is iRF - Intelligent RF Solutions, LLC hardware.

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