JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
How would you like to use this feature?
There is a way to know the IP address of who is viewing the form, you will need to add this widget to your form: https://widgets.jotform.com/app/get_visitor_location.
This guide will help you to add the widget to your form: https://www.jotform.com/help/252-How-to-Add-a-Widget-to-your-Form.
However, the data captured by this widget can not be saved it is only shown when viewing the form.
Other way to get this is by using the Form Analytics tool, on this link you will find more information about this: https://www.jotform.com/blog/150-Introducing-Form-Analytics.
With the analytics tool you are able to get the data even if the form is not submitted.
Hope this helps.