What this means
The IEEE assigned the MA-M block 440377C to BIG Climatic Manufacture, Co. LTD, Zhongshan Branch. 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 44:03:77:C, it is BIG Climatic Manufacture, Co. LTD, Zhongshan Branch hardware.
Frequently Asked Questions
Who owns MAC prefix 440377C?
440377C is registered to BIG Climatic Manufacture, Co. LTD, Zhongshan Branch in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. BIG Climatic Manufacture, Co. LTD, Zhongshan Branch's block covers 1,048,576 addresses.
What devices use 440377C?
Any network device with a MAC address starting 44:03:77:C was manufactured by or for BIG Climatic Manufacture, Co. LTD, Zhongshan Branch.