What devices use ACEF922?

Any network device with a MAC address starting AC:EF:92:2 was manufactured by or for EVA Precision Industrial Holdings Limited.

MA-M · OUI prefix

EVA Precision Industrial Holdings Limited

Q: Who owns MAC prefix ACEF922?

ACEF922 is registered to EVA Precision Industrial Holdings Limited in the IEEE MA-M registry.

Any MAC address starting AC:EF:92:2 is registered to EVA Precision Industrial Holdings Limited in CN.

OUI prefix	ACEF922
Vendor	EVA Precision Industrial Holdings Limited
Registry	MA-M (28-bit, medium block)
Country	CN
Example MAC	AC:EF:92:2:00:00:00

What this means

The IEEE assigned the MA-M block ACEF922 to EVA Precision Industrial Holdings Limited. 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:EF:92:2, it is EVA Precision Industrial Holdings Limited hardware.

Look up another MAC