top-level domain

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top-level domain

(networking)
The last and most significant component of an Internet fully qualified domain name, the part after the last ".". For example, host wombat.doc.ic.ac.uk is in top-level domain "uk" (for United Kingdom).

Every other country has its own top-level domain, including ".us" for the U.S.A. Within the .us domain, there are subdomains for the fifty states, each generally with a name identical to the state's postal abbreviation. These are rarely used however. Within the .uk domain, there is a .ac.uk subdomain for academic sites and a .co.uk domain for commercial ones. Other top-level domains may be divided up in similar ways.

In the US and some other countries, the following top-level domains are used much more widely than the country code:

.com - commercial bodies .edu - educational institutions .gov - U. S. government .mil - U. S. armed services .net - network operators .org - other organisations

Since the rapid commercialisation of the Internet in the 1990s the ".com" domain has become particularly heavily populated with every company trying to register its company name as a subdomain of .com, e.g. "netscape.com" so as to make it easy for customers to guess or remember the URL of the comany's home page.

United Nations entities use the domain names of the countries where they are located. The UN headquarters facility in New York City, for example, is un.org.

Several new top-level domains are about to be added (Oct 1997): .nom - individual people .rec - recreational organisations .firm - businesses such as law, accounting, engineering .store - commercial retail companies .ent - entertainment facilities and organisations
References in periodicals archive ?
If the application is successful Top Level Domain Holdings' subsidiary Minds + Machines, a registry services provider, will provide the back-end registry services for the proposed new domain and the City of Budapest will receive a revenue share.
Clients include new as well as existing generic Top Level Domain (gTLD) and Country Code (ccTLD) registries.
It is very important for brandholders to create a customized strategy that suits their brands and takes best advantage of this change; whether the strategy involves offensive or defensive actions, or monitoring the top level domain applications during the objection period, it is imperative that businesses devise a plan to navigate this uncharted territory.
an "exclusive contract" to be the first registrar to promote, market, and register its country code Top Level Domain (ccTLD) of .
mobile Top Level Domain Ltd (mTLD) - the joint venture company based in Dublin, Ireland is leading the development of internet usage from mobile devices by switching on the dotmobi domain name.
travel sponsored Top Level Domain (sTLD) are improved Internet identity, creation of advanced distribution channels, and the establishment of a strong trust factor between the industry and its customers.
mx), the organization that manages the country code top level domain .
DUBLIN, Ireland -- The mTLD Top Level Domain, Ltd (mTLD) announced today that it has joined as a member of the World Wide Web Consortium (W3C) and as a sponsor of the W3C's Mobile Web Initiative (MWI).
Syniverse Technologies (NYSE:SVR), a leading provider of mission-critical technology services to wireless telecommunications companies worldwide, today announced it has entered into the joint venture mTLD Top Level Domain, Ltd.
amp; CAPE TOWN, South Africa -- Deployment into Africa Marks First Global Top Level Domain Infrastructure Provider to Implement Local DNS Connectivity on the Continent
FM back in 1998, dotFM has consistently provided one of the most reliable and stable top level domains in the Industry.