Who owns MAC prefix 042F56?

042F56 is registered to ATOCS (Shenzhen) LTD in the IEEE MA-L registry.

What devices use 042F56?

Any network device with a MAC address starting 04:2F:56 was manufactured by or for ATOCS (Shenzhen) LTD.

MA-L · OUI prefix

ATOCS (Shenzhen) LTD

Any MAC address starting 04:2F:56 is registered to ATOCS (Shenzhen) LTD in CN.

OUI prefix	042F56
Vendor	ATOCS (Shenzhen) LTD
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	04:2F:56:00:00:00

What this means

The IEEE assigned the MA-L block 042F56 to ATOCS (Shenzhen) LTD. 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 04:2F:56, it is ATOCS (Shenzhen) LTD hardware.

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