Superpages, in addition to its United States directories, also carries links to global searching for numbers in Canada, Puerto Rico, Costa Rica, the Dominican Republic, South America, Europe, Asia and the Middle East, Africa, Australia, and Oceania. 

The Ultimates is a compendium of directories for white page searching combining Whitepages, Infospace, Yahoo, WhoWhere, Switchboard and Anywho. It also features reverse searching (telephone number and address), map searching, yellow pages and an e-mail directory.  

This site, which covers the United States, Canada, and the Caribbean nations, lists telephone area codes numerically and geographically and provides prefix locations within than area code. Five free lookups are allowed within a forty-eight hour period. 

Switchboard allows a user to search for both residential and business addresses and telephone numbers by personal name, business name, type of business or service, and reverse lookup. 

Makes international calling easier by giving dialing codes for foreign countries and their cities.