What this means
The IEEE assigned the MA-L block 3481C4 to AVM 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 34:81:C4, it is AVM GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix 3481C4?
3481C4 is registered to AVM 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 GmbH's block covers 16,777,216 addresses.
What devices use 3481C4?
Any network device with a MAC address starting 34:81:C4 was manufactured by or for AVM GmbH.