Who owns MAC prefix 5C5A4C3?

5C5A4C3 is registered to Ferroamp AB (publ) in the IEEE MA-M registry.

What devices use 5C5A4C3?

Any network device with a MAC address starting 5C:5A:4C:3 was manufactured by or for Ferroamp AB (publ).

MA-M · OUI prefix

Ferroamp AB (publ)

Any MAC address starting 5C:5A:4C:3 is registered to Ferroamp AB (publ) in SE.

OUI prefix	5C5A4C3
Vendor	Ferroamp AB (publ)
Registry	MA-M (28-bit, medium block)
Country	SE
Example MAC	5C:5A:4C:3:00:00:00

What this means

The IEEE assigned the MA-M block 5C5A4C3 to Ferroamp AB (publ). 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 5C:5A:4C:3, it is Ferroamp AB (publ) hardware.

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