|
Second-level Domain
In the Domain Name System (DNS) hierarchy, a second-level domain (SLD or 2LD) is a domain that is directly below a top-level domain (TLD). For example, in , is the second-level domain of the TLD. Second-level domains commonly refer to the organization that registered the domain name with a domain name registrar. Some domain name registries introduce a second-level hierarchy to a TLD that indicates the type of entity intended to register an SLD under it. For example, in the .uk namespace a college or other academic institution would register under the ccSLD, while companies would register under . Strictly speaking, domains like .ac.uk and .co.uk are second level domain themselves, since they are right below a TLD. A list of the official TLDs can be found at icann.org and iana.org. An ordinal-free term to denote domains under which people can register their own domain name is public suffix domain (PSD). Country-code second-level domains Algeria Australia Austria ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CcSLD
A country code second-level domain is a second-level domain to a country code top-level domain. Such a domain may be reserved by a domain name registry for the registration of third-level domains, or assigned to a third party as a subdomain. Many country code domain registries implement domain name classes at the second level underneath their ccTLD, such as are present in the original generic top-level domains , , and , which were intended for commercial entities, network operators, and non-profit organizations, respectively. Many countries implement additional classes. For example, the United Kingdom (.uk) uses for commercial purposes and for academic registrants. Brazil (.br) has a high number of predefined second-level domains, 140 as of 2021; they range from for commercial activities and for veterinarians to for wikis (see .br#Second-level_domains, .br § Second-level domains). See also * Domain Name System * Private sub-domain registry * Public Suffix List References [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Domain Name System
The Domain Name System (DNS) is a hierarchical and distributed name service that provides a naming system for computers, services, and other resources on the Internet or other Internet Protocol (IP) networks. It associates various information with ''domain names'' (identification (information), identification String (computer science), strings) assigned to each of the associated entities. Most prominently, it translates readily memorized domain names to the numerical IP addresses needed for locating and identifying computer services and devices with the underlying network protocols. The Domain Name System has been an essential component of the functionality of the Internet since 1985. The Domain Name System delegates the responsibility of assigning domain names and mapping those names to Internet resources by designating authoritative name servers for each domain. Network administrators may delegate authority over subdomains of their allocated name space to other name servers. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Information And Communication Technologies Authority (Turkey)
The Information and Communication Technologies Authority (ICTA) (), is a national telecommunications regulatory and inspection authority of Turkey. It was formerly known as the Telecommunications Authority (Turkish: ''Telekomünikasyon Kurumu (TK)''). Radio and television broadcasts fall under another state agency, RTÜK. History The Telecommunication Telecommunication, often used in its plural form or abbreviated as telecom, is the transmission of information over a distance using electronic means, typically through cables, radio waves, or other communication technologies. These means of ...s Authority was established by means of thLaw 4502 dated 29 January 2000. This Law addressed the responsibilities of the Ministry of Transport, among others, and "separated policy-making and regulatory functions of the government by establishing an independent telecommunications regulatory body, the Telecommunications Authority, as the first sector specific regulator in Turkey. As a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ac (second-level Domain)
AC, A.C., A/C, or Ac often refers to: * Air conditioning, often abbreviated as A/C * Alternating current, a type of electrical current in which the current repeatedly changes direction AC, A.C. or Ac may also refer to: Arts and entertainment Gaming * ''Ace Combat'', a series of combat flight simulator games * ''Animal Crossing'', a series of community simulation games * '' Anonymous;Code'', a visual novel in the Science Adventure series * '' Another Code'', a series of adventure games * '' Armored Core'', a series of mecha-based third person shooter games * ''Asheron's Call'', a fantasy massively multiplayer online role-playing game * ''Assassin's Creed'', a series of action-adventure games * '' Assetto Corsa'', a racing simulator game * ''Astral Chain'', an action-adventure hack and slash game * Armor Class, a combat-related parameter in the ''Dungeons & Dragons'' role playing game system * A.C., a character in '' Fortnite: Save the World'' Music * A.C. Newman, solo stage na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Suffix List
The Public Suffix List (PSL) is a community-maintained list of rules that describes the internet domain name suffixes under which independent organisations can register their own sites. Entries on the list are referred to as effective top-level domains (eTLDs), and contain commonly used suffixes like ''com'', ''net'' and ''co.uk'', as well as private suffixes like ''appspot.com'' and ''github.io''. The Mozilla Foundation created the PSL for the security and privacy policies of the Firefox web browser, but it is widely used in many different internet technologies with varying success, under the Mozilla Public License (MPL). The list has been shown to have numerous issues to do with privacy and security, mostly caused by applications using outdated versions. List A copy of the list is stored by all modern browsers, including Firefox, Chrome and Opera. They use it for features such as allowing cookie registration, detecting domain names in the address bar and site grouping. It is also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Private Sub-domain Registry
A private sub-domain registry allocates domain names in a subset of the Domain Name System under a domain registered with an ICANN-accredited or ccTLD registry. Most of the private sub-domain registries operate based on an ISO 3166-1 name that is a subdomain of a higher-level domain. Some of these registries combine the domain registry and the domain registrar functions in the administration structure, while others distribute domains via third-party registrars. Operation Private registries operate at a technical level identical to official domain registries using the well-known principles of operation of the Domain Name System. In addition, the registries may also operate a WHOIS service to publish domain name information. History The idea for an independent global domain name registry stems from a series of conversations between one of CentralNic's original founders and the late Jon Postel, one of the founding fathers of the modern Internet. Postel suggested the use of ''.UK.COM ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subdomain
In the Domain Name System (DNS) hierarchy, a subdomain is a domain that is a part of another (main) domain. For example, if a domain offered an online store as part of their website it might use the subdomain. Overview The Domain Name System (DNS) has a tree structure or hierarchy, which includes nodes on the tree being a domain name. A subdomain is a domain that is part of a larger domain. Each label may contain from 0 to 63 octets.RFC 1034, ''Domain Names - Concepts and Facilities'', P. Mockapetris (Nov 1987) The full domain name may not exceed a total length of 253 ASCII characters in its textual representation.RFC 1035, ''Domain names--Implementation and specification'', P. Mockapetris (Nov 1987) Subdomains are defined by editing the DNS zone file pertaining to the parent domain. However, there is an ongoing debate over the use of the term "subdomain" when referring to names which map to the Address record A (host) and various other types of zone records which may map t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Country Code Top-level Domain
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. In 2018, the Internet Assigned Numbers Authority (IANA) began implementing internationalized country code top-level domains, consisting of language-native characters when displayed in an end-user application. Creation and delegation of ccTLDs is described in RFC 1591, corresponding to ISO 3166-1 alpha-2 country codes. While gTLDs have to obey international regulations, ccTLDs are subjected to requirements that are determined by each country's domain name regulation corporation. With over 150 million domain name registrations as of 2022, ccTLDs make up about 40% of the total domain name industry. Country code extension applications began in 1985. The registered country code extensions in that year in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Top-level Domain
A top-level domain (TLD) is one of the domain name, 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 DNS root zone, 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 example.com, 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. History Originally, the top-level domain space was organized into three main groups: ''Countries'', ''Categories'', and ''Multiorganizations''. An additional ''temporary'' group consisted of only the initial DNS domain, .arpa, and was intended ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Single-letter Second-level Domains
Single-letter second-level domains are domains in which the second-level domain of the domain name consists of only one letter, such as . In 1993, the Internet Assigned Numbers Authority (IANA) explicitly reserved all single-letter and single-digit second-level domains under the top-level domains com, net, and org, and grandfathered those that had already been assigned. In December 2005, ICANN considered auctioning these domain names. Active single-letter domains On December 1, 1993, the Internet Assigned Numbers Authority (IANA) explicitly reserved the remaining single-letter and single-digit domain names. The few domains that were already assigned were grandfathered in and continued to exist. The six single-letter domains in existence at that time under .com, .net and .org were the following: The .org TLD was subsequently reopened for single-letter domain registrations. These and selected other gTLD and ccTLD single-letter domain names currently in use, typically as short ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cybersquatting
Cybersquatting (also known as domain squatting) is the practice of registering, trafficking in, or using an Internet domain name, with a bad faith intent to profit from the goodwill of a trademark belonging to someone else. The term is derived from " squatting", which is the act of occupying an abandoned or unoccupied space or building that the squatter does not own, rent, or otherwise have permission to use. Terminology In popular terms, "cybersquatting" is the term most frequently used to describe the deliberate, bad faith abusive registration of a domain name in violation of trademark rights. However, precisely because of its popular currency, the term has different meanings to different people. Some people, for example, include "warehousing", or the practice of registering a collection of domain names corresponding to trademarks with the intention of selling the registrations to the owners of the trademarks, within the notion of cybersquatting, while others distinguish betw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulletin Board System
A bulletin board system (BBS), also called a computer bulletin board service (CBBS), is a computer server running list of BBS software, software that allows users to connect to the system using a terminal program. Once logged in, the user performs functions such as uploading and downloading software and data, reading news and bulletins, and exchanging messages with other users through public Internet forum, message boards and sometimes via direct synchronous conferencing, chatting. In the early 1980s, message networks such as FidoNet were developed to provide services such as M+NetMail, NetMail, which is similar to internet-based email. Many BBSes also offered BBS door, online games in which users could compete with each other. BBSes with multiple phone lines often provided chat rooms, allowing users to interact with each other. Bulletin board systems were in many ways a precursor to the modern form of the World Wide Web, social networking service, social networks, and other aspe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
