Who owns MAC prefix E43C80?

E43C80 is registered to University of Oklahoma in the IEEE MA-L registry.

What devices use E43C80?

Any network device with a MAC address starting E4:3C:80 was manufactured by or for University of Oklahoma.

MA-L · OUI prefix

University of Oklahoma

Any MAC address starting E4:3C:80 is registered to University of Oklahoma in US.

OUI prefix	E43C80
Vendor	University of Oklahoma
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	E4:3C:80:00:00:00

What this means

The IEEE assigned the MA-L block E43C80 to University of Oklahoma. 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 E4:3C:80, it is University of Oklahoma hardware.

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