Is it possible to export a list of all our sites?

It is completely possible to export a list of all sites in an organisation with certain information within the "Data Collection Portal" platform in the "Dashboard" tab: https://collection.atinternet-solutions.com/#/dashboard

The "Export list" button will allow you to export. You will then obtain a .csv file in which you will get for each site its ID, its URL, the creation and closing date, its type (web, application) and its status...