What this means
The IEEE assigned the MA-L block 00C0C4 to COMPUTER OPERATIONAL. 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:C0:C4, it is COMPUTER OPERATIONAL hardware.
Frequently Asked Questions
Who owns MAC prefix 00C0C4?
00C0C4 is registered to COMPUTER OPERATIONAL 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. COMPUTER OPERATIONAL's block covers 16,777,216 addresses.
What devices use 00C0C4?
Any network device with a MAC address starting 00:C0:C4 was manufactured by or for COMPUTER OPERATIONAL.