Who owns MAC prefix 70B3D516A?

70B3D516A is registered to 4Jtech s.r.o. in the IEEE MA-S registry.

What devices use 70B3D516A?

Any network device with a MAC address starting 70:B3:D5:16:A was manufactured by or for 4Jtech s.r.o..

MA-S · OUI prefix

4Jtech s.r.o.

Any MAC address starting 70:B3:D5:16:A is registered to 4Jtech s.r.o..

OUI prefix	70B3D516A
Vendor	4Jtech s.r.o.
Registry	MA-S (36-bit, small block)
Example MAC	70:B3:D5:16:A:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D516A to 4Jtech 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:D5:16:A, it is 4Jtech s.r.o. hardware.

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