What devices use 4C917A1?

Any network device with a MAC address starting 4C:91:7A:1 was manufactured by or for Inster Tecnología y Comunicaciones SAU.

MA-M · OUI prefix

Inster Tecnología y Comunicaciones SAU

Q: Who owns MAC prefix 4C917A1?

4C917A1 is registered to Inster Tecnología y Comunicaciones SAU in the IEEE MA-M registry.

Any MAC address starting 4C:91:7A:1 is registered to Inster Tecnología y Comunicaciones SAU in ES.

OUI prefix	4C917A1
Vendor	Inster Tecnología y Comunicaciones SAU
Registry	MA-M (28-bit, medium block)
Country	ES
Example MAC	4C:91:7A:1:00:00:00

What this means

The IEEE assigned the MA-M block 4C917A1 to Inster Tecnología y Comunicaciones SAU. 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 4C:91:7A:1, it is Inster Tecnología y Comunicaciones SAU hardware.

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