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www vs simple http in URL

By Roberta ·
what is the difference in URL using www and those using simply http?

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by Kc 1 In reply to www vs simple http in URL

Short for HyperText Transfer Protocol, the underlying protocol used by the World Wide Web. HTTP defines how messages are formatted and transmitted, and what actions Web servers and browsers should take in response to various commands. For example, when you enter a URL in your browser, this actually sends an HTTP command to the Web server directing it to fetch and transmit the requested Web page.
A system of Internet servers that support specially formatted documents. The documents are formatted in a script called HTML (HyperText Markup Language) that supports links to other documents, as well as graphics, audio, and video files. This means you can jump from one document to another simply by clicking on hot spots. Not all Internet servers are part of the World Wide Web.

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by Joseph Moore In reply to www vs simple http in URL

If I understand your question correctly, you are asking for the difference between http://techrepublic.com and http://www.techrepublic.com

Ok. Most domains set up a single A record for WWW in DNS. So, that way the domains can have www.DOMAIN.com resolve to their web servers. But the host domain itself will resolve to a different IP address.

Sometimes, though, a host domain will resolve to the same IP address as the A record for WWW. In those cases, you can go to either http://DOMAIN.com or http://www.DOMAIN.com and both go to the same servers.

So, that is all the difference. WWW is just an A record. You don't need to set up an A record for WWW, and in fact a lot of places don't.

For example, Microsoft has an A record for WWW in their microsoft.com domain, but they also have another A record for OFFICE. So, office.microsoft.com is a valid URL.

Is there a difference in DNS between OFFICE and WWW for the microsoft.com domain? Nope. Same thing. Both are A records.

hope this helps

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