What this means
The IEEE assigned the MA-L block 00057D to Sun Communications, 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 00:05:7D, it is Sun Communications, Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 00057D?
00057D is registered to Sun Communications, 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. Sun Communications, Inc.'s block covers 16,777,216 addresses.
What devices use 00057D?
Any network device with a MAC address starting 00:05:7D was manufactured by or for Sun Communications, Inc..