What this means
The IEEE assigned the MA-S block 70B3D5F25 to JSC “Scientific Industrial Enterprise "Rubin". 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:F2:5, it is JSC “Scientific Industrial Enterprise "Rubin" hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D5F25?
70B3D5F25 is registered to JSC “Scientific Industrial Enterprise "Rubin" 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. JSC “Scientific Industrial Enterprise "Rubin"'s block covers 4,096 addresses.
What devices use 70B3D5F25?
Any network device with a MAC address starting 70:B3:D5:F2:5 was manufactured by or for JSC “Scientific Industrial Enterprise "Rubin".