Who owns MAC prefix 40EF4C?

40EF4C is registered to Fihonest communication co.,Ltd in the IEEE MA-L registry.

What devices use 40EF4C?

Any network device with a MAC address starting 40:EF:4C was manufactured by or for Fihonest communication co.,Ltd.

MA-L · OUI prefix

Fihonest communication co.,Ltd

Any MAC address starting 40:EF:4C is registered to Fihonest communication co.,Ltd in CN.

OUI prefix	40EF4C
Vendor	Fihonest communication co.,Ltd
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	40:EF:4C:00:00:00

What this means

The IEEE assigned the MA-L block 40EF4C to Fihonest communication co.,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 40:EF:4C, it is Fihonest communication co.,Ltd hardware.

Other Fihonest communication co.,Ltd prefixes

Fihonest communication co.,Ltd holds 3 registered blocks in total.

04FEA1 7C96D2

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