I just published my new website. Why I'm getting "New site visitor" notifications with RANDOM numbers. Why they are not in sequence?

Each number associates with the end of their IP address. For example, if someone goes on your site on their phone and then on their desktop, they will be different numbers although it’s the same person. Once someone leaves a contact form, their number associates with their name, making it easy to identify if people you know go on your websire