What this means
The IEEE assigned the MA-L block 000B22 to Environmental Systems and Services. 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 00:0B:22, it is Environmental Systems and Services hardware.
Frequently Asked Questions
Who owns MAC prefix 000B22?
000B22 is registered to Environmental Systems and Services 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. Environmental Systems and Services's block covers 16,777,216 addresses.
What devices use 000B22?
Any network device with a MAC address starting 00:0B:22 was manufactured by or for Environmental Systems and Services.