Who owns MAC prefix 70B3D51AB?

70B3D51AB is registered to Access Control Systems JSC in the IEEE MA-S registry.

What devices use 70B3D51AB?

Any network device with a MAC address starting 70:B3:D5:1A:B was manufactured by or for Access Control Systems JSC.

MA-S · OUI prefix

Access Control Systems JSC

Any MAC address starting 70:B3:D5:1A:B is registered to Access Control Systems JSC in RU.

OUI prefix	70B3D51AB
Vendor	Access Control Systems JSC
Registry	MA-S (36-bit, small block)
Country	RU
Example MAC	70:B3:D5:1A:B:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D51AB to Access Control Systems JSC. 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:D5:1A:B, it is Access Control Systems JSC hardware.

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