top-level domain

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Related to Tlds: gTLD

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 ?
Although it may currently not matter much to information professionals, it could require searchers to look more broadly, incorporating additional TLDs into a search strategy.
So, while we don't necessarily expect the exact same level of registration numbers, we do believe we have a chance of higher-than-average registration numbers, as compared with other TLDs that launch under ICANN's new gTLD program.
To facilitate New gTLD Registries to adopt Vertical Integration Solutions more readily, LogicBoxes has now waived off all Upfront Costs that includes platform setup and TLD integration fees.
According to Bunn, as yet, there are no particular SEO benefits from the TLD.
While Icann received 1,912 applications for generic TLDs, many are duplicates that will be auctioned off.
Seven TLDs were calibrated to ensure accurate measurements as well as for measuring background radiation.
that unless local companies and governments start applying for their own TLDs,
The Internet may thus soon have hundreds of new TLDs with names like .
DotBrand Solutions Mena has launched in the Middle East to empower Arab companies in protecting their top-level domain (TLD) names and operating their own in TLDs as alternatives to .
One of ICANN's proposals is to start offering customizable TLDs, with any extension a consumer wants.
We believe the new TLDs will provide a lot of new opportunities for phishing, pharming and malware, and we are trying to minimize the risk.
ICANN had always kept close control over the creation of TLDs but its recent decision will bring in more naming flexibility as new web addresses can end with .