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A top-level domain (TLD) is one of the domains at the highest level in the hierarchical Domain Name System of the Internet after the root domain. The top-level domain names are installed in the root zone of the name space. For all domains in lower levels, it is the last part of the domain name, that is, the last non-empty label of a fully qualified domain name. For example, in the domain name www.example.com, the top-level domain is .com. Responsibility for management of most top-level domains is delegated to specific organizations by the ICANN, an Internet multi-stakeholder community, which operates the Internet Assigned Numbers Authority (IANA), and is in charge of maintaining the DNS root zone.
In the Internet, a domain name is a string that identifies a realm of administrative autonomy, authority or control. Domain names are often used to identify services provided through the Internet, such as websites, email services and more. Domain names are used in various networking contexts and for application-specific naming and addressing purposes. In general, a domain name identifies a network domain or an Internet Protocol (IP) resource, such as a personal computer used to access the Internet, or a server computer.
The domain com is a top-level domain (TLD) in the Domain Name System (DNS) of the Internet. Created in the first group of Internet domains at the beginning of 1985, its name is derived from the word commercial, indicating its original intended purpose for subdomains registered by commercial organizations. Later, the domain opened for general purposes.
Punycode is a representation of Unicode with the limited ASCII character subset used for Internet hostnames. Using Punycode, host names containing Unicode characters are transcoded to a subset of ASCII consisting of letters, digits, and hyphens, which is called the letter–digit–hyphen (LDH) subset. For example, München is encoded as Mnchen-3ya.
An internationalized domain name (IDN) is an Internet domain name that contains at least one label displayed in software applications, in whole or in part, in non-Latin script or alphabet or in the Latin alphabet-based characters with diacritics or ligatures. These writing systems are encoded by computers in multibyte Unicode. Internationalized domain names are stored in the Domain Name System (DNS) as ASCII strings using Punycode transcription.
.name is a generic top-level domain (gTLD) in the Domain Name System of the Internet. It is intended for use by individuals for representation of their personal name, nicknames, screen names, pseudonyms, or other types of identification labels.
.nu is the Internet country code top-level domain (ccTLD) assigned to the island state of Niue. It was one of the first ccTLDs to be marketed to the Internet at large as an alternative to the gTLDs .com, .net, and .org.
A country code top-level domain (ccTLD) is an Internet top-level domain generally used or reserved for a country, sovereign state, or dependent territory identified with a country code. All ASCII ccTLD identifiers are two letters long, and all two-letter top-level domains are ccTLDs.
.ae is the country code top-level domain (ccTLD) in the Domain Name System of the Internet for the United Arab Emirates. It is administered by .aeDA which is part of the Telecommunications and Digital Government Regulatory Authority of UAE (TDRA).
.jp is the Internet country code top-level domain (ccTLD) for Japan. It was established in 1986 and is administered by the Japan Registry Services.
Generic top-level domains (gTLDs) are one of the categories of top-level domains (TLDs) maintained by the Internet Assigned Numbers Authority (IANA) for use in the Domain Name System of the Internet. A top-level domain is the last level of every fully qualified domain name. They are called generic for historical reasons; initially, they were contrasted with country-specific TLDs in RFC 920.
.tw is the Internet country code top-level domain (ccTLD) for Taiwan. The domain name is based on the ISO 3166-1 alpha-2 country code TW. The registry is maintained by the Taiwan Network Information Center (TWNIC), a Taiwanese non-profit organization appointed by the National Communications Commission (NCC) and the Ministry of Transportation and Communication. Since 1 March 2001, TWNIC has stopped allowing itself to sign up new domain names directly, instead allowing new registration through its contracted reseller registrars. As of May 2023, there are 17 registrars.
.gr is the country code top-level domain (ccTLD) for Greece. Registrations are processed via accredited registrars and domain names in Greek characters may also be registered.
The internationalized domain name (IDN) homoglyph attack is a method used by malicious parties to deceive computer users about what remote system they are communicating with, by exploiting the fact that many different characters look alike. For example, the Cyrillic, Greek and Latin alphabets each have a letter ⟨o⟩ that has the same shape but different meaning from its counterparts.
.web is a proposed top-level domain (TLD) that was created and assigned by an auction process to several bidding companies. It was awarded to Nu Dot Co LLC, which is primarily funded by Verisign.
WHOIS is a query and response protocol that is used for querying databases that store an Internet resource's registered users or assignees. These resources include domain names, IP address blocks and autonomous systems, but it is also used for a wider range of other information. The protocol stores and delivers database content in a human-readable format. The current iteration of the WHOIS protocol was drafted by the Internet Society, and is documented in RFC 3912.
The domain name .рф is the Cyrillic country code top-level domain for the Russian Federation, in the Domain Name System of the Internet. In the Domain Name System it has the ASCII DNS name xn--p1ai. The domain accepts only Cyrillic subdomain applications, and is the first Cyrillic implementation of the Internationalizing Domain Names in Applications (IDNA) system. The domain became operational on 13 May 2010. As of 2014 it is the most used internationalized country code top-level domain, with around 900,000 domain names.
An internationalized country code top-level domain is a top-level domain in the Domain Name System (DNS) of the Internet. IDN ccTLDs are specially encoded domain names that are displayed in an end user application, such as a web browser, in their language-native script or alphabet, such as the Arabic alphabet, or a non-alphabetic writing system, such as Chinese characters. IDN ccTLDs are an application of the internationalized domain name system to top-level Internet domains assigned to countries, or independent geographic regions.
.հայ is an internet country code top-level domain (ccTLD) for Armenia, designated for two-letter country code AM, intended for domain names in the Armenian language.
References
- 1 2 Bill Manning; Eric Brunner; Donald Eastlake (March 2000). "I-D draft-ietf-dnsind-iana-dns-01". IETF . p. 15.
- ↑ "i.net domain name is for sale. Inquire now". sell.sawbrokers.com. Retrieved 2022-06-03.
- ↑ Lumen Technologies (September 14, 2020). "CenturyLink Transforms, Rebrands as Lumen" (Press release). Retrieved October 7, 2022.
Lumen is pleased to announce Quantum Fiber, a fully digital platform for delivering fiber-based products and services to residents and small businesses.
- ↑ "Q.NET - remembering Desmond Llewelyn". Q.
- ↑ "The V Foundation for Cancer Research founded by Jim Valvano". V Foundation. Retrieved 2022-07-31.
- ↑ One and Two Letter .IE Domains Now Available "The release of short .ie domain names " Dublin, 12 October 2015
- ↑ ISNIC Icelandic Domain Rules , Retrieved on 22 September 2021.
- ↑ Verisign The World's Shortest Domain Names: How To Get a One Character Domain , Copenhagen, 01 December 2014. Retrieved on 04 December 2014.
- ↑ Verisign Registration Rules: Allowed Code Points , Reston VA, 01 July 2011. Retrieved on 06 April 2019.
- ↑ Roig, Jonathan. "TLD Search". WeirdOneCharacterDomainSuperstore. Retrieved 29 July 2019.
- ↑ Project 94
- ↑ "ICANN Establishes Forum on Allocation Methods for Single-Letter and Single-Digit Domain Names". ICANN. Retrieved 15 July 2017.
- ↑ Transaction of the FB.com domain
- ↑ "IG.com sells for $4.7 Million". morganlinton.com.
- ↑ Michael Berkens. "Z.com Sold For $6.8 Million Dollars". TheDomains.com.
- ↑ "U.com letter" (PDF). icann.org.