What this means
The IEEE assigned the MA-L block 00126D to University of California, Berkeley. 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 00:12:6D, it is University of California, Berkeley hardware.
Frequently Asked Questions
Who owns MAC prefix 00126D?
00126D is registered to University of California, Berkeley 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. University of California, Berkeley's block covers 16,777,216 addresses.
What devices use 00126D?
Any network device with a MAC address starting 00:12:6D was manufactured by or for University of California, Berkeley.