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Domain name
hideA 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.
This article primarily discusses the group of domain names that are offered by domain name registrars for registration by the public. The Domain Name System article discusses the technical facilities and infrastructure of the domain name space and the hostname article deals with specific information about the use of domain names as identifiers of network hosts.
For more information about Domain name, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with domain names
China issues new rules on Internet domain names
Dec 22, 2009 |
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China's Internet watchdog issued a new set of rules on domain name registration this week in a bid to curb pornography and illegal content.
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Critical protein helps mend damaged DNA
Dec 24, 2009 |
4.3 / 5 (4) |
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In order to preserve our DNA, cells have developed an intricate system for monitoring and repairing DNA damage. Yet precisely how the initial damage signal is converted into a repair response remains unclear. Researchers ...
Emerald BioStructures announces discovery of small molecule modulators of PDE4
16 hours ago |
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Emerald BioStructures (formerly deCODE biostructures) announced a publication in the December 27, 2009 advance online issue of Nature Biotechnology, detailing the application of structure-based drug design (SBDD) to engine ...
IKK may act as both inhibitor and promoter of Huntington's disease
Dec 21, 2009 |
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The kinase IKK phosphorylates the protein mutated in Huntington's disease to promote its removal and neuron survival, but IKK may be a double-edged sword that increases neurotoxicity in later stages of the disease. The study, ...
FTC looking into Google's AdMob acquisition
Dec 23, 2009 |
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Web search and advertising giant Google said Wednesday that the US Federal Trade Commission (FTC) is seeking more information about its proposed purchase of mobile advertising company AdMob.
Computer identifies authentic Van Gogh
Technology / Computer Sciences
Dec 21, 2009 |
4 / 5 (1) |
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(PhysOrg.com) -- Dutch researcher Igor Berezhnoy has developed computer algorithms to support art historians and other art experts in their visual assessment of paintings. His digital technology is capable ...
New insight in nerve cell communication
Medicine & Health / Neuroscience
Dec 22, 2009 |
4 / 5 (1) |
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Communication between nerve cells is vital for our bodies to function. Part of this communication happens through vesicles containing signalling molecules called neurotransmitters. The vesicle fuses with the ...
Protein that represses genes may play role in cell growth
Dec 21, 2009 |
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(PhysOrg.com) -- A Cornell study shows the protein not only activates some genes involved in the regulation of cell growth and signaling, but also may play a role in preventing cancers by inhibiting cell proliferation.
Scientists discover 2 genes that drive aggressive brain cancers
Dec 23, 2009 |
4 / 5 (2) |
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A team of Columbia scientists have discovered two genes that, when simultaneously activated, are responsible for the most aggressive forms of human brain cancer.
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