What this means
The IEEE assigned the MA-L block 7CFF4D to AVM Audiovisuelles Marketing und 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 7C:FF:4D, it is AVM Audiovisuelles Marketing und Computersysteme GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix 7CFF4D?
7CFF4D is registered to AVM Audiovisuelles Marketing und 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. AVM Audiovisuelles Marketing und Computersysteme GmbH's block covers 16,777,216 addresses.
What devices use 7CFF4D?
Any network device with a MAC address starting 7C:FF:4D was manufactured by or for AVM Audiovisuelles Marketing und Computersysteme GmbH.