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Evaluating Information Resources: Web Site Extensions

Is a resource valid? Is it reliable? Will this resource support my topic? Answer these questions with these guide options.

Guides and Pages Search

Website Extension Reliability

Always question and do your research to verify information, even with the most reliable websites.  Humans create websites, and errors are always possible.  Following is a guide to some of the more common website extensions and their potential value to your research.




Most Reliable

.gov = government, i.e.,, 

.mil = military, i.e.,

.us = U.S. state, county, and city government sites.  May find some yet, but many have transitioned to .gov.

.uk or .ca = other countries, i.e.,

Fairly Reliable

.edu = education, i.e.,

.org = operated by Public Interest Registry, is unrestricted, but was intended to serve the noncommercial community, i.e.,



May or May Not be Reliable

.com = operated by VeriSign, Inc., is a generic top-level domain originally intended for commercial businesses around the world; frequently associated with selling items or services, i.e.,

.net = operated by VeriSign, Inc., is a generic top-level domain used by many types of organizations and individuals globally; it was historically intended for and is still commonly used by Internet service providers, i.e.,

.biz = operated by NeuStar, Inc., is restricted to businesses.

.tv = frequently used for dedicated video pages; also a country code for Tuvalu.

.co = used similarly to .com, particularly when a preferred web site name has already been spoken for with a .com extension.

.games = used in the gaming industry.

.info = operated by Afilias Limited, is an unrestricted domain for websites containing information about you, your organization, your products or any other information you'd like to make available to a global audience.

.mobi = website is optimized for mobile devices; adhere to mobile-compatibility style guidelines; financially backed and sponsored by Google, Microsoft, Samsung, Visa, and several other leading technology companies.

.name = operated by VeriSign, Inc., is reserved for individuals.

.pro = operated by Afilias plc, is restricted to certified professionals and related entities.

.xxx - Never ever use these websites in school papers!

Visit for many more types of web site extensions.  Click any of the domains to learn the intended use of that domain.

Contact Us

Text us: (715) 953-2160

Main Phone #: 715.365.4479; 

                        800.544.3039 x4479

Mailing Address:

  • 5364 College Dr.
  • Rhinelander, WI 54501


  • The library is located on the 3rd floor of the Lakeside Center.
  • Library services are available on the 3rd floor in the library AND at the 2nd floor Information Commons.

Library Hours

Library Hours Summer 2018

  Open Close
8:00 AM 6:00 PM
Tuesday 8:00 AM 6:00 PM
Wednesday 8:00 AM 6:00 PM
Thursday 8:00 AM 6:00 PM
Friday 8:00 AM 4:00 PM
Library Closings/Reduced Services - Summer 2018
Wednesday, July 4th CLOSED, U.S. Independence Day
July 1-2 & 5 Library will close at 5:00 PM Monday, Tuesday and Thursday during the week of the Independence Day holiday
Sunday, September 2nd CLOSED, Sunday hours resume September 9th.
Monday, September 3rd CLOSED, Labor Day