Who owns MAC prefix 9C431E6?

9C431E6 is registered to R-S-I Elektrotechnik GmbH CO KG in the IEEE MA-M registry.

What devices use 9C431E6?

Any network device with a MAC address starting 9C:43:1E:6 was manufactured by or for R-S-I Elektrotechnik GmbH CO KG.

MA-M · OUI prefix

R-S-I Elektrotechnik GmbH CO KG

Any MAC address starting 9C:43:1E:6 is registered to R-S-I Elektrotechnik GmbH CO KG in DE.

OUI prefix	9C431E6
Vendor	R-S-I Elektrotechnik GmbH CO KG
Registry	MA-M (28-bit, medium block)
Country	DE
Example MAC	9C:43:1E:6:00:00:00

What this means

The IEEE assigned the MA-M block 9C431E6 to R-S-I Elektrotechnik GmbH CO KG. 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 9C:43:1E:6, it is R-S-I Elektrotechnik GmbH CO KG hardware.

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