top-level domain

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Related to Top-level domains: 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 ?
India, May 2 -- Google has opened up its .app domain three years after paying $25 million to acquire exclusive rights to use the top-level domain (TLD).
New Delhi [India], Sept 22 ( ANI ): VeriSign, Inc., a global leader in domain names and internet security on Friday announced that approximately 1.3 million domain name registrations were added to the internet in the second quarter of 2017, bringing the total number of domain name registrations to approximately 331.9 million across all top-level domains (TLDs) as of June 30, 2017.
Once upon a time, oh about 20 years ago or so, interpreting and perhaps understanding top-level domain (TLD) names was a fairly simple thing to do.
She played a major role in helping the firm become an agent with the Trademark Clearinghouse, and has advised clients with regard to registration of trademarks with the Trademark Clearinghouse, securing new top-level domains, and protecting their trademarks from misuse with these new domains.
ACOMPANY ESTABLISHED BY ABA, the Financial Services Roundtable and other industry partners--known as Financial Top-Level Domain (fTLD) Registry Service LLC--signed an agreement recently to operate the registry for the new dot-bank (bank) Internet domain name.
A top-level domain is the portion of the domain name appearing to the right of the dot.
Currently, there are 22 domains -- including .com, .net, and .edu -- called generic top-level domains (gTLDs).
ICANN's Generic Domains Division recently announced that the number of new generic Top-Level Domains (gTLDs) delegated into the Internet's Root Zone has topped 100.
Marks & Clerk provide insight on the upcoming launch of generic top-level domains
In the past, Top-Level Domains have been restricted to generic strings, such as "com" and "net", and country codes, such as "ae" for the UAE and "uk" for the United Kingdom.
When they go live in the coming months, these new top-level domains, or TLDs, could serve as powerful new marketing destinations.
After they launch those top-level domains, they can choose to sell the second-string domain [e.g., names directly to the left of .PLAY].