Who owns MAC prefix E4AFA1?

E4AFA1 is registered to HES-SO in the IEEE MA-L registry.

What devices use E4AFA1?

Any network device with a MAC address starting E4:AF:A1 was manufactured by or for HES-SO.

MA-L · OUI prefix

HES-SO

Any MAC address starting E4:AF:A1 is registered to HES-SO in CH.

OUI prefix	E4AFA1
Vendor	HES-SO
Registry	MA-L (24-bit, large block)
Country	CH
Example MAC	E4:AF:A1:00:00:00

What this means

The IEEE assigned the MA-L block E4AFA1 to HES-SO. 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 E4:AF:A1, it is HES-SO hardware.

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