Who owns MAC prefix A40B78?

A40B78 is registered to FAST PHOTONICS HK CO., LIMITED in the IEEE MA-L registry.

What devices use A40B78?

Any network device with a MAC address starting A4:0B:78 was manufactured by or for FAST PHOTONICS HK CO., LIMITED.

MA-L · OUI prefix

FAST PHOTONICS HK CO., LIMITED

Any MAC address starting A4:0B:78 is registered to FAST PHOTONICS HK CO., LIMITED in CN.

OUI prefix	A40B78
Vendor	FAST PHOTONICS HK CO., LIMITED
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	A4:0B:78:00:00:00

What this means

The IEEE assigned the MA-L block A40B78 to FAST PHOTONICS HK CO., 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 A4:0B:78, it is FAST PHOTONICS HK CO., LIMITED hardware.

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