What this means
The IEEE assigned the MA-S block 70B3D5D9B to Russian Telecom Equipment Company. 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:D9:B, it is Russian Telecom Equipment Company hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D5D9B?
70B3D5D9B is registered to Russian Telecom Equipment Company 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. Russian Telecom Equipment Company's block covers 4,096 addresses.
What devices use 70B3D5D9B?
Any network device with a MAC address starting 70:B3:D5:D9:B was manufactured by or for Russian Telecom Equipment Company.