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| Alphabetical | By Popularity (What's This?) | |  All Area Codes
 - Directory of U.S. area codes by state plus cities within each area code. Also lists Canadian area codes by province or territory.- Canadian Numbering Administrator (CNA)
- Provides number administration service for Canadian telecommunications, central office code administration, area codes, and the processing of applications for North American Numbering Plan resources.
- Fone Finder
- Identifies the city associated with a specific area code and prefix. Also identifies international country codes and the geographical location of the telephone.
- 1+ Area Codes & Country Codes
- Directory of U.S. area codes and international country calling codes. Includes world city dialing codes by city name and by number.
- Addresses.com: Area Code Directory
- Look up area codes by states and cities. Also includes ZIP codes, time zones, and links to local white and yellow pages.
- AmeriCom Long Distance Area Decoder
- Provides current information related to area codes, city codes, and country codes. Search by names or codes at the city, state, or country level.
- Area Code Listing, by Number
- Search U.S. and international area codes by number to find what major cities the area code contains. Also find links to other area code resources.
- Area Code Lookup
- Cheat sheet listing area codes and their corresponding U.S. regions. Browse by state or by code.
- Area Codes Lookup
- Look up U.S. area codes and ZIP codes, or find postal and phone information for a town, city, or county.
- Area Codes.org
- Search by area code, state abbreviation, or city name.
- AreaCode-Info.com
- Features code lists, maps, and news to help you keep up with all the changes.
- Jay Computer Services: ZIP and Area Codes
- ZIP code and area code lookup and conversion database. Includes reverse area code lookup and Canadian postal codes.
- LincMad Telephone Area Codes & Splits
- Information about the original area codes from 1947, their evolution to the current state, and future developments including area code splits and overlays. Also features area code maps.
- NANPA Area Code Maps
![[*]](http://us.i1.yimg.com/us.yimg.com/i/ca/rating2.gif) - Clickable map of the U.S. with detailed state-by-state area code information. Select a state from the map, or by alphabetized list. Updated by Tele Atlas. - NANPA Area Codes
- Search by area code or select by geographic location. Includes information on planned area codes not yet in service and links to area code maps for the U.S. and Canada.
- North American Numbering Plan Administration (NANPA)
- Neutral, third party administrator that works with the telecommunications industry in developing area code relief plans. Also oversees the assignment of codes and other numbering resources throughout the United States, Canada, Bermuda, and 16 Caribbean countries.
- Qwest: Area Codes
- Offers a clickable map for viewing area codes in each state around the U.S., by region.
- SuperPhone.net: Area Code Finder
- Find area codes for North America and the Caribbean and country codes worldwide.
- Telephone Area Code Finder
- Area code and time zone information for North America.
- Telephone Prefix Location List
- Find city information by area code and prefix.
- US And Canadian Area Code Listings: ABTolls.com
- Quick reference to U.S. and Canadian area codes, sorted into lists by area code and location.
- USAers.com: Area Code Directory
- U.S. area code directory by state and city. Reverse search is also available.
- WhitePages.Com: Area Code Lookup
- Area code and reverse area code finder, letting you enter a city and state to find an area code, or enter an area code to find the associated cities and state.
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