What this means
The IEEE assigned the MA-L block 001259 to THERMO ELECTRON KARLSRUHE. 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 00:12:59, it is THERMO ELECTRON KARLSRUHE hardware.
Frequently Asked Questions
Who owns MAC prefix 001259?
001259 is registered to THERMO ELECTRON KARLSRUHE 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. THERMO ELECTRON KARLSRUHE's block covers 16,777,216 addresses.
What devices use 001259?
Any network device with a MAC address starting 00:12:59 was manufactured by or for THERMO ELECTRON KARLSRUHE.