What devices use DCB3B4?

Any network device with a MAC address starting DC:B3:B4 was manufactured by or for Honeywell Environmental & Combustion Controls (Tianjin) Co., Ltd..

MA-L · OUI prefix

Honeywell Environmental & Combustion Controls (Tianjin) Co., Ltd.

Q: Who owns MAC prefix DCB3B4?

DCB3B4 is registered to Honeywell Environmental & Combustion Controls (Tianjin) Co., Ltd. in the IEEE MA-L registry.

Any MAC address starting DC:B3:B4 is registered to Honeywell Environmental & Combustion Controls (Tianjin) Co., Ltd. in CN.

OUI prefix	DCB3B4
Vendor	Honeywell Environmental & Combustion Controls (Tianjin) Co., Ltd.
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	DC:B3:B4:00:00:00

What this means

The IEEE assigned the MA-L block DCB3B4 to Honeywell Environmental & Combustion Controls (Tianjin) 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 DC:B3:B4, it is Honeywell Environmental & Combustion Controls (Tianjin) Co., Ltd. hardware.

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