What this means
The IEEE assigned the MA-M block 18C3F4D 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 18:C3:F4:D, it is Shanghai Kanghai Information System CO.,LTD. hardware.
Frequently Asked Questions
Who owns MAC prefix 18C3F4D?
18C3F4D 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 18C3F4D?
Any network device with a MAC address starting 18:C3:F4:D was manufactured by or for Shanghai Kanghai Information System CO.,LTD..