What this means
The IEEE assigned the MA-L block E8B722 to GreenTrol Automation. 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 E8:B7:22, it is GreenTrol Automation hardware.
Frequently Asked Questions
Who owns MAC prefix E8B722?
E8B722 is registered to GreenTrol Automation 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. GreenTrol Automation's block covers 16,777,216 addresses.
What devices use E8B722?
Any network device with a MAC address starting E8:B7:22 was manufactured by or for GreenTrol Automation.