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