Who owns MAC prefix 70B3D59D7?

70B3D59D7 is registered to KM OptoElektronik GmbH in the IEEE MA-S registry.

What devices use 70B3D59D7?

Any network device with a MAC address starting 70:B3:D5:9D:7 was manufactured by or for KM OptoElektronik GmbH.

MA-S · OUI prefix

KM OptoElektronik GmbH

Any MAC address starting 70:B3:D5:9D:7 is registered to KM OptoElektronik GmbH in DE.

OUI prefix	70B3D59D7
Vendor	KM OptoElektronik GmbH
Registry	MA-S (36-bit, small block)
Country	DE
Example MAC	70:B3:D5:9D:7:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D59D7 to KM OptoElektronik GmbH. 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:D5:9D:7, it is KM OptoElektronik GmbH hardware.

Look up another MAC