Who owns MAC prefix 70B3D50D9?

70B3D50D9 is registered to Brechbuehler AG in the IEEE MA-S registry.

What devices use 70B3D50D9?

Any network device with a MAC address starting 70:B3:D5:0D:9 was manufactured by or for Brechbuehler AG.

MA-S · OUI prefix

Brechbuehler AG

Any MAC address starting 70:B3:D5:0D:9 is registered to Brechbuehler AG in CH.

OUI prefix	70B3D50D9
Vendor	Brechbuehler AG
Registry	MA-S (36-bit, small block)
Country	CH
Example MAC	70:B3:D5:0D:9:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D50D9 to Brechbuehler AG. 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:D5:0D:9, it is Brechbuehler AG hardware.

Look up another MAC