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Definition of Domain Name
A domain name is an identification label to define a realm of administrative autonomy, authority, or control in the Internet, based on the Domain Name System (DNS).
Domain names are used in various networking contexts and application-specific naming and addressing purposes. Domain names are organized in subordinate levels (subdomains) of the top-level Internet domains (TLDs), such as the prominent domains com, net and org. Below the top-level domains in the DNS hierarchy are the second-level and third-level domain names that are typically open for reservation by end-users that wish to connect local area networks to the Internet, run web sites, or create other publicly accessible Internet resources. The registration of these domain names is usually administered by domain name registrars who sell their services to the public.
Individual Internet host computers use domain names as host identifiers, or hostnames. Hostnames are the leaf labels in the domain name system usually without further subordinate domain name space. Hostnames appear as a component in Uniform Resource Locators (URLs) for Internet resources such as web sites (e.g., en.wikipedia.org).
Domain names are also used as simple identification labels to indicate ownership or control of a resource. Such examples are the realm identifiers used in the Session Initiation Protocol (SIP), the DomainKeys used to verify DNS domains in e-mail systems, and in many other Uniform Resource Identifiers (URIs).
An important purpose of domain names is to provide easily recognizable and memorizable names to numerically addressed Internet resources. This abstraction allows any resource (e.g., website) to be moved to a different physical location in the address topology of the network, globally or locally in an intranet. Such a move usually requires changing the IP address of a resource and the corresponding translation of this IP address to and from its domain name.
Source: Wikipedia
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Free Domain Names
Without a domain name, a person does not have a suitable way to find a website. The only problem is domain names cost money. Granted, if a person is operating one or two sites, the cost of a domain name, (which ranges from $1.00 to $35), probably isn't too steep.
However, what if one is an avid marketer, making profit from hundreds of sites? Even the minimum in domain name fees can add up. This is why Internet marketing gurus might want to consider signing up for free domain names. Three types of free domain name exist: third level domain names, first level domain names with lesser used extensions and first level domain names with traditional extensions.
The first type of free domain name is known as a third level domain name. This is a domain name that is commonly distributed by free web hosting companies or affiliate programs. Yet, there is a downside to this type of domain name. This downside involves the first level domain name, (usually the company's name), having to be a part of the third level domain name. For example, consider a website created with Geocities.
If a webmaster chooses 'web hosting' as their third level domain name, the following would be the syntax: Geocities.com/webhosting. Such a domain name is not very convenient for potential visitors, so webmasters may want to consider redirecting these types of URLs to other versions of free domain names.
The second type of free domain name is a first level domain name that contains an extension that is not as popular in the Internet world. Examples are the types of free domain names offered by Dot.tk or Free Domain.co. The extensions offered from these companies are .tk and .co.nr, respectively. These are far from a .com or a .net, but they are not as cumbersome to use as a third level domain name. The main key is going to be making sure the initial domain name is short and easy to remember, so potential visitors won't be as offset by the unusual extension.
Finally, there are free domain names with extensions that are more commonly used such as .com or .org. To find these a person has to do some sleuthing. Sometimes individuals will offer them for free, since they were about to expire anyway. A person can try to find these situations through message boards dedicated to webmasters. Other times companies will offer these types of free domain names because they are getting free ad space. What happens is every time the free domain name is used, a pop-up ad will show up on the person's website. This is how the free domain name company gets their revenue.
In conclusion, free domain names can be an excellent alternative for someone needing domains for several websites. The best ones are those in which a person can get a first level domain, though a third level domain name is better than nothing. To sign up for a free domain name, one can search for free domain name companies on the Internet.
Source: Dedicated Hosting Hub
