Who owns MAC prefix ECFAAA?

ECFAAA is registered to The IMS Company in the IEEE MA-L registry.

What devices use ECFAAA?

Any network device with a MAC address starting EC:FA:AA was manufactured by or for The IMS Company.

MA-L · OUI prefix

The IMS Company

Any MAC address starting EC:FA:AA is registered to The IMS Company in US.

OUI prefix	ECFAAA
Vendor	The IMS Company
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	EC:FA:AA:00:00:00

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.

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