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 ?
Abu Dhabi: The Abu Dhabi Smart Solutions and Services Authority (ADSSSA) on Saturday announced the launch of the Abu Dhabi internet domain suffix -- .abudhabi -- in both English and Arabic to represent the emirate's digital identity in the virtual world.
ICANN has allocated .London domain suffix recently, when asked whether .Dubai and .Abu Dhabi suffix will happen soon, he said there are applications for these but I am not sure where they are in the pipeline.
Bulgaria may apply once again for receiving the ".[ETH][+ or -][ETH][sup.3]" Internet domain suffix for which it was snubbed on several occasions by the Internet Corporation for Assigned Names and Numbers (ICANN).
have been assigned a two-letter domain suffix by the Internet Assigned Numbers Authority, which is loosely affiliated with the United Nations.
The Uttoxeter-based company, established by Paul and three fellow entrepreneurs, supplies personal e-mail addresses for family members using the .me.uk domain suffix.
Because, it seems, there are moves to create a new domain suffix, purely for Scots and called .sc, a much more attractive proposition for those companies wanting a Scottish Net identity.
Summary: Abu Dhabi's Smart Solutions and Services Authority, ADSSSA, announced the launch of the Abu Dhabi Internet domain suffixes (.abudhabi), and (.UuU aeU[sup.1]U ae) for Arabic to represent the Emirate's digital identity in the virtual world.
Domain suffixes such as dot PH make for more specific user-targeted search results, helping Google provide better service to its millions of users.
Generic top-level domains, however, include unrestricted domain suffixes like .com, .net, .org, and .info.
Considerable thought also needs to be provided to brand derivatives such as social media tags and domain suffixes for the brand name and even catchphrases associated to the brand.
With reportedly 1,000 new, top-level domain suffixes to be added to the current and rather limited list of around 30, the chances of a conflict will grow exponentially.
A new batch will debut on February 5 with domain suffixes camera, equipment, estate, gallery, graphics, lighting, and photography, the company said in a release.

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