Who owns MAC prefix 78D4F13?

78D4F13 is registered to Ekoenergetyka - Polska S.A. in the IEEE MA-M registry.

What devices use 78D4F13?

Any network device with a MAC address starting 78:D4:F1:3 was manufactured by or for Ekoenergetyka - Polska S.A..

MA-M · OUI prefix

Ekoenergetyka - Polska S.A.

Any MAC address starting 78:D4:F1:3 is registered to Ekoenergetyka - Polska S.A. in PL.

OUI prefix	78D4F13
Vendor	Ekoenergetyka - Polska S.A.
Registry	MA-M (28-bit, medium block)
Country	PL
Example MAC	78:D4:F1:3:00:00:00

What this means

The IEEE assigned the MA-M block 78D4F13 to Ekoenergetyka - Polska 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 78:D4:F1:3, it is Ekoenergetyka - Polska S.A. hardware.

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