What this means
The IEEE assigned the MA-L block 001291 to KWS Computersysteme GmbH. 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 00:12:91, it is KWS Computersysteme GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix 001291?
001291 is registered to KWS Computersysteme GmbH 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. KWS Computersysteme GmbH's block covers 16,777,216 addresses.
What devices use 001291?
Any network device with a MAC address starting 00:12:91 was manufactured by or for KWS Computersysteme GmbH.