What this means
The IEEE assigned the MA-S block 70B3D575D to Nanjing Magewell Electronics 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 70:B3:D5:75:D, it is Nanjing Magewell Electronics Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D575D?
70B3D575D is registered to Nanjing Magewell Electronics Co., Ltd. in the IEEE MA-S registry.
What does the MA-S registry type mean?
An MA-S assignment, formerly called OUI-36, covers 36 bits, giving the vendor 4,096 device addresses, the smallest block the IEEE issues. Nanjing Magewell Electronics Co., Ltd.'s block covers 4,096 addresses.
What devices use 70B3D575D?
Any network device with a MAC address starting 70:B3:D5:75:D was manufactured by or for Nanjing Magewell Electronics Co., Ltd..