What this means
The IEEE assigned the MA-L block 74FF7D to Wren Sound Systems, LLC. 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 74:FF:7D, it is Wren Sound Systems, LLC hardware.
Frequently Asked Questions
Who owns MAC prefix 74FF7D?
74FF7D is registered to Wren Sound Systems, LLC 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. Wren Sound Systems, LLC's block covers 16,777,216 addresses.
What devices use 74FF7D?
Any network device with a MAC address starting 74:FF:7D was manufactured by or for Wren Sound Systems, LLC.