Who owns MAC prefix 40A36B8?

40A36B8 is registered to SFT Co., Ltd. in the IEEE MA-M registry.

What devices use 40A36B8?

Any network device with a MAC address starting 40:A3:6B:8 was manufactured by or for SFT Co., Ltd..

MA-M · OUI prefix

SFT Co., Ltd.

Any MAC address starting 40:A3:6B:8 is registered to SFT Co., Ltd. in JP.

OUI prefix	40A36B8
Vendor	SFT Co., Ltd.
Registry	MA-M (28-bit, medium block)
Country	JP
Example MAC	40:A3:6B:8:00:00:00

What this means

The IEEE assigned the MA-M block 40A36B8 to SFT 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:A3:6B:8, it is SFT Co., Ltd. hardware.

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