Who owns MAC prefix AC02EF?

AC02EF is registered to Comsis in the IEEE MA-L registry.

What devices use AC02EF?

Any network device with a MAC address starting AC:02:EF was manufactured by or for Comsis.

MA-L · OUI prefix

Comsis

Any MAC address starting AC:02:EF is registered to Comsis in FR.

OUI prefix	AC02EF
Vendor	Comsis
Registry	MA-L (24-bit, large block)
Country	FR
Example MAC	AC:02:EF:00:00:00

What this means

The IEEE assigned the MA-L block AC02EF to Comsis. 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:02:EF, it is Comsis hardware.

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