Quick info is loaded with over 2000 international cities (outside of
the U.S), over 290 area codes and over 250 internet suffixes. It
will quickly and easily give you:

1) The location and timezone of over 290 US areacodes
2) The country and city dialing code of over 2000 cities
3) The local time in those 2000 international cities
4) The country that a internet suffix belongs to: i.e.
'be' = Belgium

ZIPKEY is a complete city-level directory of 5-digit United States zipcodes, 3-digit telephone area codes, and time zones, combined with a keyboard enhancement program. If you type US addresses into any Windows program, ZIPKEY will speed your job and improve your accuracy. You type the zipcode, and ZIPKEY types out the city, state, etc. for you. Instantly look up telephone area codes and time zones as well.

Forty one freeware in one install. Words can't explain these valuable mini
utilities, check them out.