How to set up Google Analytics for mirrors of the site?

Hello! There is a website with different domain addresses, for example, example1.com , example2.com, example3.com where example1.com - the main mirror. Refer to different folders on the hosting, but the content is almost identical. How to set up Google Analytics to correctly take into account all these mirrors?
July 4th 19 at 23:46
1 answer
July 4th 19 at 23:48
Thank You for the help! :) - nikita.Stracke commented on July 4th 19 at 23:51

Find more questions by tags Google Analytics