- Anywho by AT&T - Yellow & White Pages and reserve phone number lookup.
- Allareacodes.com- Area code lookup by states, cities and other areas.
- The Escapeartist.com - Dialing Codes, Directories, Embassies, Voltages & Rates: Worldwide.
- Infobel.com - Allows you to search by address, name, reverse address and reverse phone number. Great for international addresses as well.
- Internet 800 Directory - Finds toll free numbers.
- Switchboard - Search for people, businesses, email.
- The Virtualgumshoe - This page has links for Internet Investigators.
- The Whitepages.com - Find addresses, phone numbers, email addresses, zip codes and area codes of people and businesses. There are several different lookup options.
- Zip Codes (U.S. Postal Service) - Searches for national zip codes by city, state or by address.