Who owns MAC prefix 70B3D53C9?

70B3D53C9 is registered to Duerkopp-Adler in the IEEE MA-S registry.

What devices use 70B3D53C9?

Any network device with a MAC address starting 70:B3:D5:3C:9 was manufactured by or for Duerkopp-Adler.

MA-S · OUI prefix

Duerkopp-Adler

Any MAC address starting 70:B3:D5:3C:9 is registered to Duerkopp-Adler in DE.

OUI prefix	70B3D53C9
Vendor	Duerkopp-Adler
Registry	MA-S (36-bit, small block)
Country	DE
Example MAC	70:B3:D5:3C:9:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D53C9 to Duerkopp-Adler. 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:D5:3C:9, it is Duerkopp-Adler hardware.

Look up another MAC