What this means
The IEEE assigned the MA-L block E438F2 to Advantage Controls. 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 E4:38:F2, it is Advantage Controls hardware.
Frequently Asked Questions
Who owns MAC prefix E438F2?
E438F2 is registered to Advantage Controls 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. Advantage Controls's block covers 16,777,216 addresses.
What devices use E438F2?
Any network device with a MAC address starting E4:38:F2 was manufactured by or for Advantage Controls.