What this means
The IEEE assigned the MA-M block 4048FD5 to The 52nd Research Institute of China Electronic Technology Group Corporation. 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 40:48:FD:5, it is The 52nd Research Institute of China Electronic Technology Group Corporation hardware.
Frequently Asked Questions
Who owns MAC prefix 4048FD5?
4048FD5 is registered to The 52nd Research Institute of China Electronic Technology Group Corporation 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. The 52nd Research Institute of China Electronic Technology Group Corporation's block covers 1,048,576 addresses.
What devices use 4048FD5?
Any network device with a MAC address starting 40:48:FD:5 was manufactured by or for The 52nd Research Institute of China Electronic Technology Group Corporation.