What this means
The IEEE assigned the MA-L block 4C2258 to cozybit, 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 4C:22:58, it is cozybit, Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 4C2258?
4C2258 is registered to cozybit, 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. cozybit, Inc.'s block covers 16,777,216 addresses.
What devices use 4C2258?
Any network device with a MAC address starting 4C:22:58 was manufactured by or for cozybit, Inc..