Mar. 25, 2012

information literacy roman numeral 4

Mar. 25, 2012

The goal is to make judgments about website information based upon what the URL tells you. Here are three guiding questions that can help.

1. Do you recognize the domain name?

The domain name is found after the http:// and www. to the first forward slash /. For example in the URL, is the domain name.

A domain name can sometimes provide clues about the quality of information of a site or tell you what a site is about.

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2.  What is the extension in the domain name?

.com and .net are examples of extensions. Extensions are an important part of domain names. You probably know quite a few already. Extensions are intended to show the type of establishment that owns and publishes the domain. Here is a list to look for:


.edu       Educational organization (most US universities)
.k12       US school site (not all US schools use this)
.ac         Academic institution (outside of US)
.sch        School site (some schools outside of the US use this)
.com       Company (usually .co in the UK)
.org        Any organization
.gov       Government agency
.net        Network
.mil        Military institution

New extensions to look for are .biz, .name, .pro, .info. All are used for commercial purposes.

Extensions can also include country codes, such as .uk, .ca, .za, etc. For a complete list refer to:

Some extensions may provide more reliable information than others, but there are no guarantees. Ones that may be more reliable are .edu, .gov, .k12. Ones to watch out for are .com, .org, .net. These domains can be purchased by anybody. This is not to say that sites with these extensions can never be trusted, but it is good to know whether you are on a commercial or special interest-type site if you are trying to access academic-type information.

3. Are you on a personal page?

You may or may not recognize the domain name or extension of a URL. Keep reading past the first forward slash / for more clues. If you are on a personal page the information you are reading may or may not be trustworthy.

A personal page is a website created by an individual. The website may contain useful information, links to important resources and helpful facts, but sometimes these pages offer highly biased opinions.

The presence of a name in the URL such as jdoe and a tilde ~ or % or the word users or people or members frequently means you are on a personal website.

Even if a site has the extension, .edu, you still need to keep a look out for personal pages. Case in point is this website previously available and published by a professor at Northwestern University:

This site is a Holocaust Revisionist site that argues that the Holocaust did not take place. Although this site contains a domain name we should be able to trust, the tilde ~ followed by someone’s name, abutz tell us that this is a personal posting and not an official Northwestern page.

**Today, Professor Butz’s site, describing the holocaust as an historic myth is no longer available at the original address. In fact, when you type in the address a screen from Northwestern appears that says the site is no longer available. The message is only accurate in part. The site is no longer available at the original address but it is available if you know how to research the history of a website with a special tool called the Wayback Machine. (see section VI)

To use Professor Butz’s site, you will be directed to an archived address of the original site:

Notice the second half of this URL. You’ll see that this second half shows the actual former address of the site.**

20 Responses to “4 How to Read a Web Address”

  1. Tina Christian says:

    I have learned a lot with this information.
    Thank you very much.

  2. Terry Buckley says:

    I learned something new! I assumed there was indeed a way to differentiate from personal and professional but was unaware as to what the specifics were.

  3. Lisa Lipstraw says:

    Good info. I had no idea what signs to look for that made something an individual’s page. The address can be misleading.

  4. rhonda overman says:

    I did not know the difference between personal and professional sights. Thanks for info.

  5. Carrie Campbell says:

    I knew some of this, but many things I did not know.

  6. Lori Burden says:

    I try to explain the differences and meanings of different web addresses and love how helpful this is for my class.

  7. Belinda says:

    I learned more about personal and professional pages.

  8. Glenda Henderson says:

    Something I have known but needed a little review!!

  9. Patsy says:

    Good reminder about personal information on a “trustworthy” site! A lot of students see wikipedia as the one and only source of information in the world, it is definitely something to talk about.

  10. Fernando Rodriguez says:

    I have learned how to understand the codes for the webs I feel very comfortable to know their meanings

  11. Vern says:

    Good information. I learned things to look for
    in the web address when determning if the site can
    be trusted or not.

  12. Karri Anderson says:

    I knew some of this but not all. It’s a good source of information to share with our students.

  13. Staci Delp says:

    I found the list of common extensions helpful.

  14. Matt Brewer says:

    Good to know when looking up research

  15. Samantha bland says:

    I knew some of this, but did not know the difference in personal and professional websites… Great information!

  16. Sarah Carr ESL says:

    Very informative! I didn’t know about the tilde.

  17. Nancy Hamilton says:

    Good information. I did not know any of this.

  18. Books Download PDF says:

    I’d like to add up on read subdomains too.

    If the main domain is, then a subdomain can be It can also be possible that a subdomain can be redirected to as a subdirectory via htaccess. It’s a bit technical but I know you can understand it clearly.


  19. dane roberts says:

    Practical article – Just to add my thoughts , you require a a form , my family found a blank form here

  20. aprajita ralli says:

    very informative … every teacher must share in the class with all student groups as well

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