What this means
The IEEE assigned the MA-L block AC40EA to C&T Solution 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 AC:40:EA, it is C&T Solution Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix AC40EA?
AC40EA is registered to C&T Solution 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. C&T Solution Inc.'s block covers 16,777,216 addresses.
What devices use AC40EA?
Any network device with a MAC address starting AC:40:EA was manufactured by or for C&T Solution Inc..