What this means
The IEEE assigned the MA-L block F81547 to Avaya 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 F8:15:47, it is Avaya Inc hardware.
Frequently Asked Questions
Who owns MAC prefix F81547?
F81547 is registered to Avaya 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. Avaya Inc's block covers 16,777,216 addresses.
What devices use F81547?
Any network device with a MAC address starting F8:15:47 was manufactured by or for Avaya Inc.