What this means
The IEEE assigned the MA-L block 000577 to SM Information & Communication. 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 00:05:77, it is SM Information & Communication hardware.
Frequently Asked Questions
Who owns MAC prefix 000577?
000577 is registered to SM Information & Communication 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. SM Information & Communication's block covers 16,777,216 addresses.
What devices use 000577?
Any network device with a MAC address starting 00:05:77 was manufactured by or for SM Information & Communication.