InfoSpace is a new Web based phone directory that claims to be the "most comprehensive on the Internet," with over 112 million listings. Users can search people, businesses, yellow pages, and fax directories in the U.S. and Canada. A blue pages government and toll free 800 number directory is available for the U.S. only at this time. Forthcoming services include a large email search service and...

SuperPages.com (formerly provided by NYNEX Information Technologies), is a U.S. national yellow pages phone directory of businesses. The user can search by city, state, address, business category, and business name. Results provide name, address, and phone number.

In 1996 Yahoo added this enhancement to its popular Internet directory service. It's People Search allows you to find telephone numbers and email addresses by entering a search form. The telephone directory is supplied by Database America (the provider of the Switchboard.com database), and the email interface directly queries Four11.com.