Who owns MAC prefix 70B3D5E5E?

70B3D5E5E is registered to Critical Link LLC in the IEEE MA-S registry.

What devices use 70B3D5E5E?

Any network device with a MAC address starting 70:B3:D5:E5:E was manufactured by or for Critical Link LLC.

MA-S · OUI prefix

Critical Link LLC

Any MAC address starting 70:B3:D5:E5:E is registered to Critical Link LLC in US.

OUI prefix	70B3D5E5E
Vendor	Critical Link LLC
Registry	MA-S (36-bit, small block)
Country	US
Example MAC	70:B3:D5:E5:E:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D5E5E to Critical Link 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:E5:E, it is Critical Link LLC hardware.

Critical Link LLC

What this means

Other Critical Link LLC prefixes