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