What this means
The IEEE assigned the MA-L block 00075B to Gibson Guitars. 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 00:07:5B, it is Gibson Guitars hardware.
Frequently Asked Questions
Who owns MAC prefix 00075B?
00075B is registered to Gibson Guitars 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. Gibson Guitars's block covers 16,777,216 addresses.
What devices use 00075B?
Any network device with a MAC address starting 00:07:5B was manufactured by or for Gibson Guitars.