What this means
The IEEE assigned the MA-S block 70B3D5403 to Mighty Cube 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:D5:40:3, it is Mighty Cube Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D5403?
70B3D5403 is registered to Mighty Cube 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. Mighty Cube Co., Ltd.'s block covers 4,096 addresses.
What devices use 70B3D5403?
Any network device with a MAC address starting 70:B3:D5:40:3 was manufactured by or for Mighty Cube Co., Ltd..