What this means
The IEEE assigned the MA-L block 0012F3 to u-blox AG. 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:F3, it is u-blox AG hardware.
Frequently Asked Questions
Who owns MAC prefix 0012F3?
0012F3 is registered to u-blox AG 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. u-blox AG's block covers 16,777,216 addresses.
What devices use 0012F3?
Any network device with a MAC address starting 00:12:F3 was manufactured by or for u-blox AG.