HEATKEYS

AreaCode.org lists US and Canada telephone area codes for reverse area code lookup. Find area code list, area code maps, and cities within an area code.

Area codes for all of the United States, Canada and the Caribbean with information about overlays and splits. Look up by state or area code.

Locator for telephone area codes in the USA, Canada and some Caribbean Islands; lookup cities in an area code and viceversa - detailed information on all codes including map and time zone/curent time

Yahoo! Answers is a new way to find and share information. You can ask questions on any topic, get answers from real people, and share your insights and experience.

Area code lookup for all US cities or use the area codes locator to find which city a phone area code belongs to.

Time zones, time differences, distance calculator, US time zones with area codes and other air travel tools and calculations.

Lists U.S. and Canada area codes, the state the area code belongs to, and the time zone of all area codes starting with 2.

NPA NXX Area Code Database List & demographics, Directory of Area Codes NPA NXX, Exchanges, CLLi, Lat/Lon, Carrier, Landline/Cell indicator.

UCSD Department of Computer Science and Engineering

CSGNetwork Free Information. Calculators, Converters, Glossary, Open Source Code... find something. Most pages require JavaScript.

Free computer help and support. Answering all your computer related questions with complete information on all hardware and software.