What this means
The IEEE assigned the MA-L block 00197A to MAZeT 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 00:19:7A, it is MAZeT GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix 00197A?
00197A is registered to MAZeT 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. MAZeT GmbH's block covers 16,777,216 addresses.
What devices use 00197A?
Any network device with a MAC address starting 00:19:7A was manufactured by or for MAZeT GmbH.