Be sure to read our article on Advanced People Finding Skills

DatabaseAmerica offers a similar service.

Bigfoot Directory
A global email directory, with phone numbers and addresses for the United States. Put in as little information as you want, but try to narrow your search as much as possible.

BigYellow
Search Nynex's BigYellow. You'll find more than 70 million residential listings here! Enter as much or as little information as you want. All fields are optional.

CCSO Phonebook
Search through 325 university and organization phone and email directories. It prompts you first for an org from the page, then for a person.

Four11
A huge, White Pages-style email address and phone-number directory. It's easy to use, and (most of the time) it gets the job done. It also gives you a chance to say "411." Enter as much or as little information as you want - all fields are optional.

InfoSpace
National phone directories for people and businesses. Also, fax directory, blue pages for government, city profiles under MyTown, along with maps for each listing. Use the forms below to search phone directories within the US, or go to InfoSpace to look up someone in Canada.

Search for the phone number of a person:

Internet Address Finder
Five and a half million email addresses, indexed by DoubleClick. The search form can be a little finicky, but it lets you use * as a wildcard character. The "Last name" field is always necessary.

Middlebury College's Phonebook Search
Otis Gospodnetic has designed this interface to search through hundreds of international university phone books. It's as easy as plugging names into a Web form.

Notre Dame Gopher Site
Maintained at the University of Notre Dame, this extensive list of school phone books includes international universities.

ProfNet
The Professors Network brings the press in contact with experts at universities. Queries for journalists are free.

Switchboard
Cool searchable index of the master list of US telephone White Pages directories. The vice squad is even using it to track criminals. Go figure.

USC Experts Directory
Search by subject for phone numbers and email addresses of USC authorities (who make themselves very available).

WhoWhere?
Search for email addresses, phone numbers, Web pages, and snailmail addresses. Only the person's name, in any order, is required in the search form.