What this means
The IEEE assigned the MA-M block E41E0A3 to Avast Software s.r.o.. 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 E4:1E:0A:3, it is Avast Software s.r.o. hardware.
Frequently Asked Questions
Who owns MAC prefix E41E0A3?
E41E0A3 is registered to Avast Software s.r.o. in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. Avast Software s.r.o.'s block covers 1,048,576 addresses.
What devices use E41E0A3?
Any network device with a MAC address starting E4:1E:0A:3 was manufactured by or for Avast Software s.r.o..