Who owns MAC prefix D4A5B4?

D4A5B4 is registered to Hengji Jiaye (Hangzhou) Technology Co., Ltd in the IEEE MA-L registry.

What devices use D4A5B4?

Any network device with a MAC address starting D4:A5:B4 was manufactured by or for Hengji Jiaye (Hangzhou) Technology Co., Ltd.

MA-L · OUI prefix

Hengji Jiaye (Hangzhou) Technology Co., Ltd

Any MAC address starting D4:A5:B4 is registered to Hengji Jiaye (Hangzhou) Technology Co., Ltd in CN.

OUI prefix	D4A5B4
Vendor	Hengji Jiaye (Hangzhou) Technology Co., Ltd
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	D4:A5:B4:00:00:00

What this means

The IEEE assigned the MA-L block D4A5B4 to Hengji Jiaye (Hangzhou) 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 D4:A5:B4, it is Hengji Jiaye (Hangzhou) Technology Co., Ltd hardware.

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