Switchboard
United States residential and business listings.
http://www.switchboard.com/

InfoUSA
Nationwide directory assistance for individuals or businesses,
http://www.infousa.com/

Infobel
International residence and business listings for most countries. Offered in multiple languages.
http://www.infobel.com/

140Online
Directory of telephone numbers for companies and individuals in Egypt.
http://www.140online.com/

Email Address Finder
Searches for email addresses, phone numbers, white pages, yellow pages and links to major directories.
http://www.allemailaddresses.com/

411 Information
Search for people and businesses in the white and yellow pages.
http://www.411.info

Apni Directory
Indo-Canadian directory serving the Okanagan region of British Columbia.
http://www.apnidirectory.com/

SuperPages
United States white and yellow page listings. Includes links to directories for other countries.
http://www.superpages.com/

Jay Computer Services
Zip codes, cities, states, counties, area codes, and time zones. Do zip code proximity calculations. Includes area code change information.
http://nt.jcsm.com/

International Numbering Plans
International dialing codes and numbering plans.
http://www.numberingplans.com/

Phonenumber.com
Phone numbers and addresses for people and businesses.
http://www.phonenumber.com/

Payphone Directory
Lists thousands of payphone numbers and locations, sorted by state. Includes phones in Canada and a few other countries.
http://www.payphone-directory.org/

Africa Phone Books
Local white and yellow page phone directories for several African countries.
http://www.africaphonebooks.com/

Addresses.com
Offers email addresses, phone numbers, street addresses and business listings.
http://www.addresses.com

AskYP
Online Yellow Pages directory with reverse phone number, maps, white pages, latitude and longitude, zip codes and area codes.
http://www.askyp.com

soUno Directories
An Internet phone book with business and residential listings.
http://www.souno.com/

InfoTaxi
Accurate taxi companies information directory and search engine providing phone numbers and urls worldwide.
http://www.infotaxi.org

Krillion.com
Find stores and products near you, with our unbiased, nationwide local listings.
http://www.krillion.com/