Build a Website using php or javascript

I would like to create a page to check the numerical portability coverage of our solution on https://voiicr.com. The customer will: - Visit the page - Select the country - Select the region / state - Enter the city name - If there is coverage, confirm (green) and take it to a conversion page or registration link - If there is no coverage, report a red warning that we will not be able to carry the customer's fixed number, but offering the possibility for him to contract a plan with a new number. It would look like these pages: [login to view URL] [login to view URL] The site is ready, as well as the coverage listing (I have files in .csv, xlsx and .mysql format, we will send the files and the frontend. I await the offers.