Who owns MAC prefix 3CA31A?

3CA31A is registered to Oilfind International LLC in the IEEE MA-L registry.

What devices use 3CA31A?

Any network device with a MAC address starting 3C:A3:1A was manufactured by or for Oilfind International LLC.

MA-L · OUI prefix

Oilfind International LLC

Any MAC address starting 3C:A3:1A is registered to Oilfind International LLC in US.

OUI prefix	3CA31A
Vendor	Oilfind International LLC
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	3C:A3:1A:00:00:00

What this means

The IEEE assigned the MA-L block 3CA31A to Oilfind International 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 3C:A3:1A, it is Oilfind International LLC hardware.

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