What this means
The IEEE assigned the MA-S block 70B3D568A to Advanced Telecommunications Research Institute International. 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:D5:68:A, it is Advanced Telecommunications Research Institute International hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D568A?
70B3D568A is registered to Advanced Telecommunications Research Institute International 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. Advanced Telecommunications Research Institute International's block covers 4,096 addresses.
What devices use 70B3D568A?
Any network device with a MAC address starting 70:B3:D5:68:A was manufactured by or for Advanced Telecommunications Research Institute International.