Who owns MAC prefix 0050A3?

0050A3 is registered to TransMedia Communications, Inc. in the IEEE MA-L registry.

What devices use 0050A3?

Any network device with a MAC address starting 00:50:A3 was manufactured by or for TransMedia Communications, Inc..

MA-L · OUI prefix

TransMedia Communications, Inc.

Any MAC address starting 00:50:A3 is registered to TransMedia Communications, Inc. in US.

OUI prefix	0050A3
Vendor	TransMedia Communications, Inc.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:50:A3:00:00:00

What this means

The IEEE assigned the MA-L block 0050A3 to TransMedia Communications, 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:A3, it is TransMedia Communications, Inc. hardware.

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