Who owns MAC prefix D491AF?

D491AF is registered to Electroacustica General Iberica, S.A. in the IEEE MA-L registry.

What devices use D491AF?

Any network device with a MAC address starting D4:91:AF was manufactured by or for Electroacustica General Iberica, S.A..

MA-L · OUI prefix

Electroacustica General Iberica, S.A.

Any MAC address starting D4:91:AF is registered to Electroacustica General Iberica, S.A. in ES.

OUI prefix	D491AF
Vendor	Electroacustica General Iberica, S.A.
Registry	MA-L (24-bit, large block)
Country	ES
Example MAC	D4:91:AF:00:00:00

What this means

The IEEE assigned the MA-L block D491AF to Electroacustica General Iberica, S.A.. 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 D4:91:AF, it is Electroacustica General Iberica, S.A. hardware.

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