What this means
The IEEE assigned the MA-M block EC74CD1 to Shanghai Kanghai Information System 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 EC:74:CD:1, it is Shanghai Kanghai Information System CO.,LTD. hardware.
Frequently Asked Questions
Who owns MAC prefix EC74CD1?
EC74CD1 is registered to Shanghai Kanghai Information System 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. Shanghai Kanghai Information System CO.,LTD.'s block covers 1,048,576 addresses.
What devices use EC74CD1?
Any network device with a MAC address starting EC:74:CD:1 was manufactured by or for Shanghai Kanghai Information System CO.,LTD..