What this means
The IEEE assigned the MA-L block 00807F to DY-4 INCORPORATED. 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 00:80:7F, it is DY-4 INCORPORATED hardware.
Frequently Asked Questions
Who owns MAC prefix 00807F?
00807F is registered to DY-4 INCORPORATED 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. DY-4 INCORPORATED's block covers 16,777,216 addresses.
What devices use 00807F?
Any network device with a MAC address starting 00:80:7F was manufactured by or for DY-4 INCORPORATED.