AreaCodes 2.0.6

the author of this app says:

AreaCodes allows users to look up area codes by state. By entering an area code, users can find the state, region and nearby area codes.

You can also select any state, province or other region throughout the United States, Canada, the Caribbean or the Pacific, and view a list of area codes servicing the region. The detailed list contains further geographic descriptions and the associated time zone.