This is the link to the SharePoint User Information List:

https://sharepoint.example.com/_catalogs/users/simple.aspx

The bold part must be replaced by the SharePoint site collection URL.

The interesting part is this: /_catalogs/users/simple.aspx

For example:

https://intranet.yourcompany.com/sites/finance/_catalogs/users/simple.aspx

/sites/finance is the site collection part of the URL in this case.

This list is a special system list but it’s based on the “normal” list mechanism of SharePoint. Therefore it has an ID and by knowing that you can open the settings page of the list.

If you opend the User Information List using the URL above in Firefox, Edge, Chrome,… you can select the surrounding table and grab the list ID from the HTML DOM:

With this ID you can open the settings page:

https://sharepoint.example.com/_layouts/15/listedit.aspx?List={F9780EA0-8B18-47E1-88BF-7C9543561C58}