What devices use 001F39?

Any network device with a MAC address starting 00:1F:39 was manufactured by or for Construcciones y Auxiliar de Ferrocarriles, S.A..

MA-L · OUI prefix

Construcciones y Auxiliar de Ferrocarriles, S.A.

Q: Who owns MAC prefix 001F39?

001F39 is registered to Construcciones y Auxiliar de Ferrocarriles, S.A. in the IEEE MA-L registry.

Any MAC address starting 00:1F:39 is registered to Construcciones y Auxiliar de Ferrocarriles, S.A. in ES.

OUI prefix	001F39
Vendor	Construcciones y Auxiliar de Ferrocarriles, S.A.
Registry	MA-L (24-bit, large block)
Country	ES
Example MAC	00:1F:39:00:00:00

What this means

The IEEE assigned the MA-L block 001F39 to Construcciones y Auxiliar de Ferrocarriles, 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 00:1F:39, it is Construcciones y Auxiliar de Ferrocarriles, S.A. hardware.

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