What this means
The IEEE assigned the MA-L block A4C40D to WAC Lighting. 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:C4:0D, it is WAC Lighting hardware.
Frequently Asked Questions
Who owns MAC prefix A4C40D?
A4C40D is registered to WAC Lighting 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. WAC Lighting's block covers 16,777,216 addresses.
What devices use A4C40D?
Any network device with a MAC address starting A4:C4:0D was manufactured by or for WAC Lighting.