What this means
The IEEE assigned the MA-L block 0004CA to FreeMs Corp.. 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 00:04:CA, it is FreeMs Corp. hardware.
Frequently Asked Questions
Who owns MAC prefix 0004CA?
0004CA is registered to FreeMs Corp. 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. FreeMs Corp.'s block covers 16,777,216 addresses.
What devices use 0004CA?
Any network device with a MAC address starting 00:04:CA was manufactured by or for FreeMs Corp..