sk-sanju/tracker ? reverse-engineered prompt

Build me a simple Django app that lets a user enter a phone number and get useful details back from the Numverify API.

I want a clean, easy to use page where someone can type in a number, submit it, and see whether it is valid plus info like country, location, carrier, and line type. Keep the interface straightforward and friendly, with clear error handling if the number is invalid or the API does not respond.

Please wire up the backend so it makes the API request, processes the response, and shows the results on the page. If you need to check current Django or requests docs online, go ahead. Also make sure the project runs smoothly with a basic local setup and includes whatever is needed to get started without extra confusion.