Who owns MAC prefix 0050A4?

0050A4 is registered to IO TECH, INC. in the IEEE MA-L registry.

What devices use 0050A4?

Any network device with a MAC address starting 00:50:A4 was manufactured by or for IO TECH, INC..

MA-L · OUI prefix

IO TECH, INC.

Any MAC address starting 00:50:A4 is registered to IO TECH, INC. in US.

OUI prefix	0050A4
Vendor	IO TECH, INC.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:50:A4:00:00:00

What this means

The IEEE assigned the MA-L block 0050A4 to IO TECH, INC.. 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 00:50:A4, it is IO TECH, INC. hardware.

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