What this means
The IEEE assigned the MA-L block ACB181 to Belden Mooresville. 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:B1:81, it is Belden Mooresville hardware.
Frequently Asked Questions
Who owns MAC prefix ACB181?
ACB181 is registered to Belden Mooresville 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. Belden Mooresville's block covers 16,777,216 addresses.
What devices use ACB181?
Any network device with a MAC address starting AC:B1:81 was manufactured by or for Belden Mooresville.