Who owns MAC prefix 70B3D58DA?

70B3D58DA is registered to MicroElectronics System Co.Ltd in the IEEE MA-S registry.

What devices use 70B3D58DA?

Any network device with a MAC address starting 70:B3:D5:8D:A was manufactured by or for MicroElectronics System Co.Ltd.

MA-S · OUI prefix

MicroElectronics System Co.Ltd

Any MAC address starting 70:B3:D5:8D:A is registered to MicroElectronics System Co.Ltd in JP.

OUI prefix	70B3D58DA
Vendor	MicroElectronics System Co.Ltd
Registry	MA-S (36-bit, small block)
Country	JP
Example MAC	70:B3:D5:8D:A:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D58DA to MicroElectronics System Co.Ltd. 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:D5:8D:A, it is MicroElectronics System Co.Ltd hardware.

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