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.
Frequently Asked Questions
Who owns MAC prefix E43C80?
E43C80 is registered to University of Oklahoma in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. University of Oklahoma's block covers 16,777,216 addresses.
What devices use E43C80?
Any network device with a MAC address starting E4:3C:80 was manufactured by or for University of Oklahoma.