What this means
The IEEE assigned the MA-S block 70B3D56C5 to CJSC «Russian telecom equipment company» (CJSC RTEC). 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:D5:6C:5, it is CJSC «Russian telecom equipment company» (CJSC RTEC) hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D56C5?
70B3D56C5 is registered to CJSC «Russian telecom equipment company» (CJSC RTEC) 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. CJSC «Russian telecom equipment company» (CJSC RTEC)'s block covers 4,096 addresses.
What devices use 70B3D56C5?
Any network device with a MAC address starting 70:B3:D5:6C:5 was manufactured by or for CJSC «Russian telecom equipment company» (CJSC RTEC).