What this means
The IEEE assigned the MA-L block 581122 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 58:11:22, it is ASUSTek COMPUTER INC. hardware.
Frequently Asked Questions
Who owns MAC prefix 581122?
581122 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 581122?
Any network device with a MAC address starting 58:11:22 was manufactured by or for ASUSTek COMPUTER INC..