What is a third level domain?
Posted by - NA -, Last modified by Jen Ferraz on 11 April 2011 01:20 PM
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Domain name you are familiar with are composed of at least two levels, a top-level domain and a second-level domain. The top-level domain, also referred to as TLD, is the suffix or extension attached to Internet domain names. There are a limited number of predefined TLDs, such as .com, .net, .org, .biz, .us, etc. A third-level domain is commonly referred to as a "subdomain", and adds a third domain portion to the URL. The most common third level domain is "www", such as, "www.domain.com", or "www.mivamerchant.com". You will also see specialized third-level domains in use on some sites, such as "secure.domain.com", "blog.domain.com", etc. Once you have registered a regular second-level domain name, you may use any third-level domain name that you want. For example, if you registered "mydomain.com", you may also use "www.mydomain.com", "secure.mydomain.com", "anything.mydomain.com", and so on. | |
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