We have an option to generate Inventory Reports in Site24x7. Navigate to Reports > Network Devices > and select Inventory Report under All Monitors. Here, you can view all details related to all the network monitors on Site24x7. You can add or remove columns as required by clicking on the table icon on the top-right part of the page.
The same option is available for Server Monitors too. Navigate to Reports> Server Monitor> and Click Inventory Report under All Monitors.
Please let us know if you require any other columns besides those available. If it is feasible, we'll accommodate it in our future releases.
Hope this helps.