Calling Code Guru by Devin Tuchsen

Calling Code Guru is an app for iPhone and iPad that lets you check out area codes in the North American Numbering Plan and country codes around the world.

Ever wondered where a caller was calling from? Ever had part of a phone number, but not the area or country code for it? Calling Code Guru features include:

• Browse all the area codes in the North American Numbering Plan
• Search for area codes based on the area code, the city, or the state
• See a list of cities and areas covered by the different area codes
• Browse country codes worldwide
• Search for country codes based on the code or country
• See the format for country codes worldwide, along with their prefixes
• View maps for all the area and country codes
• Clean, clutter-free user interface
• Optimized for both iPhone and iPad