What this means
The IEEE assigned the MA-M block CCD39DE to Shanghai tongli information 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 CC:D3:9D:E, it is Shanghai tongli information technology co. LTD hardware.
Frequently Asked Questions
Who owns MAC prefix CCD39DE?
CCD39DE is registered to Shanghai tongli information 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. Shanghai tongli information technology co. LTD's block covers 1,048,576 addresses.
What devices use CCD39DE?
Any network device with a MAC address starting CC:D3:9D:E was manufactured by or for Shanghai tongli information technology co. LTD.