What this means
The IEEE assigned the MA-L block F88DEF to Tenebraex. 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 F8:8D:EF, it is Tenebraex hardware.
Frequently Asked Questions
Who owns MAC prefix F88DEF?
F88DEF is registered to Tenebraex 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. Tenebraex's block covers 16,777,216 addresses.
What devices use F88DEF?
Any network device with a MAC address starting F8:8D:EF was manufactured by or for Tenebraex.