What this means
The IEEE assigned the MA-L block 0030F3 to At Work Computers. 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 00:30:F3, it is At Work Computers hardware.
Frequently Asked Questions
Who owns MAC prefix 0030F3?
0030F3 is registered to At Work Computers 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. At Work Computers's block covers 16,777,216 addresses.
What devices use 0030F3?
Any network device with a MAC address starting 00:30:F3 was manufactured by or for At Work Computers.