What this means
The IEEE assigned the MA-L block 0040CA to FIRST INTERNAT'L 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 00:40:CA, it is FIRST INTERNAT'L COMPUTER, INC hardware.
Frequently Asked Questions
Who owns MAC prefix 0040CA?
0040CA is registered to FIRST INTERNAT'L 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. FIRST INTERNAT'L COMPUTER, INC's block covers 16,777,216 addresses.
What devices use 0040CA?
Any network device with a MAC address starting 00:40:CA was manufactured by or for FIRST INTERNAT'L COMPUTER, INC.