What this means
The IEEE assigned the MA-L block 747B7A to ETH 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 74:7B:7A, it is ETH Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 747B7A?
747B7A is registered to ETH Inc. 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. ETH Inc.'s block covers 16,777,216 addresses.
What devices use 747B7A?
Any network device with a MAC address starting 74:7B:7A was manufactured by or for ETH Inc..