What this means
The IEEE assigned the MA-L block 4045DA to Spreadtrum Communications (Shanghai) 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 40:45:DA, it is Spreadtrum Communications (Shanghai) Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 4045DA?
4045DA is registered to Spreadtrum Communications (Shanghai) Co., Ltd. in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Spreadtrum Communications (Shanghai) Co., Ltd.'s block covers 16,777,216 addresses.
What devices use 4045DA?
Any network device with a MAC address starting 40:45:DA was manufactured by or for Spreadtrum Communications (Shanghai) Co., Ltd..