What this means
The IEEE assigned the MA-L block 90FF79 to Metro Ethernet Forum. 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 90:FF:79, it is Metro Ethernet Forum hardware.
Frequently Asked Questions
Who owns MAC prefix 90FF79?
90FF79 is registered to Metro Ethernet Forum 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. Metro Ethernet Forum's block covers 16,777,216 addresses.
What devices use 90FF79?
Any network device with a MAC address starting 90:FF:79 was manufactured by or for Metro Ethernet Forum.