Who owns MAC prefix 70B3D5812?

70B3D5812 is registered to TESCAN Brno, s.r.o. in the IEEE MA-S registry.

What devices use 70B3D5812?

Any network device with a MAC address starting 70:B3:D5:81:2 was manufactured by or for TESCAN Brno, s.r.o..

MA-S · OUI prefix

TESCAN Brno, s.r.o.

Any MAC address starting 70:B3:D5:81:2 is registered to TESCAN Brno, s.r.o. in CZ.

OUI prefix	70B3D5812
Vendor	TESCAN Brno, s.r.o.
Registry	MA-S (36-bit, small block)
Country	CZ
Example MAC	70:B3:D5:81:2:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D5812 to TESCAN Brno, s.r.o.. 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:D5:81:2, it is TESCAN Brno, s.r.o. hardware.

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