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.
Frequently Asked Questions
Who owns MAC prefix E4AFA1?
E4AFA1 is registered to HES-SO in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. HES-SO's block covers 16,777,216 addresses.
What devices use E4AFA1?
Any network device with a MAC address starting E4:AF:A1 was manufactured by or for HES-SO.