What this means
The IEEE assigned the MA-L block F41563 to F5 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 F4:15:63, it is F5 Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix F41563?
F41563 is registered to F5 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. F5 Inc.'s block covers 16,777,216 addresses.
What devices use F41563?
Any network device with a MAC address starting F4:15:63 was manufactured by or for F5 Inc..