Who owns MAC prefix 8C1F6420D?

8C1F6420D is registered to Grossenbacher Systeme AG in the IEEE MA-S registry.

What devices use 8C1F6420D?

Any network device with a MAC address starting 8C:1F:64:20:D was manufactured by or for Grossenbacher Systeme AG.

MA-S · OUI prefix

Grossenbacher Systeme AG

Any MAC address starting 8C:1F:64:20:D is registered to Grossenbacher Systeme AG in CH.

OUI prefix	8C1F6420D
Vendor	Grossenbacher Systeme AG
Registry	MA-S (36-bit, small block)
Country	CH
Example MAC	8C:1F:64:20:D:00:00:00

What this means

The IEEE assigned the MA-S block 8C1F6420D to Grossenbacher Systeme 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 8C:1F:64:20:D, it is Grossenbacher Systeme AG hardware.

Other Grossenbacher Systeme AG prefixes

Grossenbacher Systeme AG holds 25 registered blocks in total.

70B3D50DE 70B3D50E8 70B3D5297 70B3D53EB 70B3D55E2 70B3D55FE 70B3D56B7 70B3D5758 70B3D5803 70B3D5A92 70B3D5B75 70B3D5BB5 all 25 »

Look up another MAC