Who owns MAC prefix 78AFE4?

78AFE4 is registered to Comau S.p.A in the IEEE MA-L registry.

What devices use 78AFE4?

Any network device with a MAC address starting 78:AF:E4 was manufactured by or for Comau S.p.A.

MA-L · OUI prefix

Comau S.p.A

Any MAC address starting 78:AF:E4 is registered to Comau S.p.A in IT.

OUI prefix	78AFE4
Vendor	Comau S.p.A
Registry	MA-L (24-bit, large block)
Country	IT
Example MAC	78:AF:E4:00:00:00

What this means

The IEEE assigned the MA-L block 78AFE4 to Comau S.p.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:AF:E4, it is Comau S.p.A hardware.

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