What this means
The IEEE assigned the MA-L block 3C7C3F to ASUSTek COMPUTER INC.. 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 3C:7C:3F, it is ASUSTek COMPUTER INC. hardware.
Frequently Asked Questions
Who owns MAC prefix 3C7C3F?
3C7C3F is registered to ASUSTek COMPUTER INC. 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. ASUSTek COMPUTER INC.'s block covers 16,777,216 addresses.
What devices use 3C7C3F?
Any network device with a MAC address starting 3C:7C:3F was manufactured by or for ASUSTek COMPUTER INC..