Who owns MAC prefix 00053D?

00053D is registered to Agere Systems in the IEEE MA-L registry.

What devices use 00053D?

Any network device with a MAC address starting 00:05:3D was manufactured by or for Agere Systems.

MA-L · OUI prefix

Agere Systems

Any MAC address starting 00:05:3D is registered to Agere Systems in US.

OUI prefix	00053D
Vendor	Agere Systems
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:05:3D:00:00:00

What this means

The IEEE assigned the MA-L block 00053D to Agere Systems. 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 00:05:3D, it is Agere Systems hardware.

Other Agere Systems prefixes

Agere Systems holds 2 registered blocks in total.

00022D

Look up another MAC