What this means
The IEEE assigned the MA-S block 70B3D5B7B to Doosan Digital Innovation America. 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:B7:B, it is Doosan Digital Innovation America hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D5B7B?
70B3D5B7B is registered to Doosan Digital Innovation America 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. Doosan Digital Innovation America's block covers 4,096 addresses.
What devices use 70B3D5B7B?
Any network device with a MAC address starting 70:B3:D5:B7:B was manufactured by or for Doosan Digital Innovation America.