What this means
The IEEE assigned the MA-M block 48E663C to BEIJING CUNYIN CHENGQI 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 48:E6:63:C, it is BEIJING CUNYIN CHENGQI TECHNOLOGY CO., LTD. hardware.
Frequently Asked Questions
Who owns MAC prefix 48E663C?
48E663C is registered to BEIJING CUNYIN CHENGQI TECHNOLOGY CO., LTD. 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. BEIJING CUNYIN CHENGQI TECHNOLOGY CO., LTD.'s block covers 1,048,576 addresses.
What devices use 48E663C?
Any network device with a MAC address starting 48:E6:63:C was manufactured by or for BEIJING CUNYIN CHENGQI TECHNOLOGY CO., LTD..