Who owns MAC prefix 78A183?

78A183 is registered to Advidia in the IEEE MA-L registry.

What devices use 78A183?

Any network device with a MAC address starting 78:A1:83 was manufactured by or for Advidia.

MA-L · OUI prefix

Advidia

Any MAC address starting 78:A1:83 is registered to Advidia in US.

OUI prefix	78A183
Vendor	Advidia
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	78:A1:83:00:00:00

What this means

The IEEE assigned the MA-L block 78A183 to Advidia. 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 78:A1:83, it is Advidia hardware.

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