What this means
The IEEE assigned the MA-L block A4561B to MCOT Corporation. 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 A4:56:1B, it is MCOT Corporation hardware.
Frequently Asked Questions
Who owns MAC prefix A4561B?
A4561B is registered to MCOT Corporation 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. MCOT Corporation's block covers 16,777,216 addresses.
What devices use A4561B?
Any network device with a MAC address starting A4:56:1B was manufactured by or for MCOT Corporation.