What this means
The IEEE assigned the MA-L block 001278 to International Bar Code. 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 00:12:78, it is International Bar Code hardware.
Frequently Asked Questions
Who owns MAC prefix 001278?
001278 is registered to International Bar Code 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. International Bar Code's block covers 16,777,216 addresses.
What devices use 001278?
Any network device with a MAC address starting 00:12:78 was manufactured by or for International Bar Code.