Who owns MAC prefix ACA667?

ACA667 is registered to Electronic Systems Protection, Inc. in the IEEE MA-L registry.

What devices use ACA667?

Any network device with a MAC address starting AC:A6:67 was manufactured by or for Electronic Systems Protection, Inc..

MA-L · OUI prefix

Electronic Systems Protection, Inc.

Any MAC address starting AC:A6:67 is registered to Electronic Systems Protection, Inc. in US.

OUI prefix	ACA667
Vendor	Electronic Systems Protection, Inc.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	AC:A6:67:00:00:00

What this means

The IEEE assigned the MA-L block ACA667 to Electronic Systems Protection, Inc.. 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 AC:A6:67, it is Electronic Systems Protection, Inc. hardware.

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