Currently, Exotel is available in 20 countries across the globe. In the main menu on your left Find Virtual Numbers tab-> New Virtual Number->Change The list of available countries is shown
In India, Exotel is available in 11 telecom circles. In the main menu on your left find Exophones tab -> New Exophone -> Change, you can see the circles they belong to.
Once a number is selected, you can procure the number by Clicking the Rent option and assigning the number to a call flow.
You can also follow the article How do I procure a new ExoPhone? for more details.
You can reach out to email@example.com (08088-919-888) for any concerns.