What devices use AC77B9?

Any network device with a MAC address starting AC:77:B9 was manufactured by or for Nanjing Yufei Intelligent Control Technology Co.,LTD.

MA-L · OUI prefix

Nanjing Yufei Intelligent Control Technology Co.,LTD

Q: Who owns MAC prefix AC77B9?

AC77B9 is registered to Nanjing Yufei Intelligent Control Technology Co.,LTD in the IEEE MA-L registry.

Any MAC address starting AC:77:B9 is registered to Nanjing Yufei Intelligent Control Technology Co.,LTD in CN.

OUI prefix	AC77B9
Vendor	Nanjing Yufei Intelligent Control Technology Co.,LTD
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	AC:77:B9:00:00:00

What this means

The IEEE assigned the MA-L block AC77B9 to Nanjing Yufei Intelligent Control Technology 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 AC:77:B9, it is Nanjing Yufei Intelligent Control Technology Co.,LTD hardware.

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