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This list of Internet top-level domains (TLD) contains top-level domains, which are those domains in the DNS root zone of the Domain Name System of the Internet. A list of the top-level domains by the Internet Assigned Numbers Authority (IANA) is maintained at the Root Zone Database. IANA also oversees the approval process for new proposed top-level domains for ICANN. , their root domain contains 1502 top-level domains. , the IANA root database includes 1589 TLDs. That also includes 68 that are not assigned (revoked), 8 that are retired and 11 test domains. Those are not represented in IANA's listing and are not in root.zone file (root.zone file also includes one root domain). Types IANA distinguishes the following groups of top-level domains: * infrastructure top-level domain (ARPA) * generic top-level domains (gTLD) * generic-restricted top-level domains (grTLD) * sponsored top-level domains (sTLD) * country code top-level domains (ccTLD) * test top-level domains (tT ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ICANN
The Internet Corporation for Assigned Names and Numbers (ICANN ) is an American multistakeholder group and nonprofit organization responsible for coordinating the maintenance and procedures of several databases related to the namespaces and numerical spaces of the Internet, ensuring the network's stable and secure operation. ICANN performs the actual technical maintenance work of the Central Internet Address pools and DNS root zone registries pursuant to the Internet Assigned Numbers Authority (IANA) function contract. The contract regarding the IANA stewardship functions between ICANN and the National Telecommunications and Information Administration (NTIA) of the United States Department of Commerce ended on October 1, 2016, formally transitioning the functions to the global multistakeholder community. Much of its work has concerned the Internet's global Domain Name System (DNS), including policy development for internationalization of the DNS, introduction of new gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Generic Top-level Domain
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. The core group of generic top-level domains consists of the com, net, org, biz, and info domains. In addition, the domains name, and pro are also considered ''generic''; however, these are designated as ''restricted'', because registrations within them require proof of eligibility within the guidelines set for each. Historically, the group of generic top-level domains included domains, created in the early development of the domain name system, that are now sponsored by designated agencies or organizations and are restricted to specific types of registrants. Thus, domains edu, gov, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Top-level Domain
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. 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 for transitional purposes toward th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IPv6
Internet Protocol version 6 (IPv6) is the most recent version of the Internet Protocol (IP), the communications protocol that provides an identification and location system for computers on networks and routes traffic across the Internet. IPv6 was developed by the Internet Engineering Task Force (IETF) to deal with the long-anticipated problem of IPv4 address exhaustion, and is intended to replace IPv4. In December 1998, IPv6 became a Draft Standard for the IETF, which subsequently ratified it as an Internet Standard on 14 July 2017. Devices on the Internet are assigned a unique IP address for identification and location definition. With the rapid growth of the Internet after commercialization in the 1990s, it became evident that far more addresses would be needed to connect devices than the IPv4 address space had available. By 1998, the IETF had formalized the successor protocol. IPv6 uses 128-bit addresses, theoretically allowing 2128, or approximately total addresses. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Advanced Research Projects Agency
The Defense Advanced Research Projects Agency (DARPA) is a research and development agency of the United States Department of Defense responsible for the development of emerging technologies for use by the military. Originally known as the Advanced Research Projects Agency (ARPA), the agency was created on February 7, 1958, by President Dwight D. Eisenhower in response to the Soviet launching of Sputnik 1 in 1957. By collaborating with academia, industry, and government partners, DARPA formulates and executes research and development projects to expand the frontiers of technology and science, often beyond immediate U.S. military requirements.Dwight D. Eisenhower and Science & Technology, (2008). Dwight D. Eisenhower Memorial CommissionSource ''The Economist'' has called DARPA the agency "that shaped the modern world," and pointed out that " Moderna's COVID-19 vaccine sits alongside weather satellites, GPS, drones, stealth technology, voice interfaces, the personal computer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military Of The United States
The United States Armed Forces are the military forces of the United States. The armed forces consists of six service branches: the Army, Marine Corps, Navy, Air Force, Space Force, and Coast Guard. The president of the United States is the commander-in-chief of the armed forces and forms military policy with the Department of Defense (DoD) and Department of Homeland Security (DHS), both federal executive departments, acting as the principal organs by which military policy is carried out. All six armed services are among the eight uniformed services of the United States. From their inception during the American Revolutionary War, the U.S. Armed Forces have played a decisive role in the history of the United States. They helped forge a sense of national unity and identity through victories in the First Barbary War and the Second Barbary War. They played a critical role in the American Civil War, keeping the Confederacy from seceding from the republic and preserving the u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cybersecurity And Infrastructure Security Agency
The Cybersecurity and Infrastructure Security Agency (CISA) is an agency of the United States Department of Homeland Security (DHS) that is responsible for strengthening cybersecurity and infrastructure protection across all levels of government, coordinating cybersecurity programs with U.S. states, and improving the government's cybersecurity protections against private and nation-state hackers. Its activities are a continuation of the National Protection and Programs Directorate (NPPD), and was established on November 16, 2018, when President Donald Trump signed into law the Cybersecurity and Infrastructure Security Agency Act of 2018. History The National Protection and Programs Directorate (NPPD) was formed in 2007 as a component of the United States Department of Homeland Security. NPPD's goal was to advance the Department's national security mission by reducing and eliminating threats to U.S. critical physical and cyber infrastructure. On November 16, 2018, President Trum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Federal Government Of The United States
The federal government of the United States (U.S. federal government or U.S. government) is the national government of the United States, a federal republic located primarily in North America, composed of 50 states, a city within a federal district (the city of Washington in the District of Columbia, where most of the federal government is based), five major self-governing territories and several island possessions. The federal government, sometimes simply referred to as Washington, is composed of three distinct branches: legislative, executive, and judicial, whose powers are vested by the U.S. Constitution in the Congress, the president and the federal courts, respectively. The powers and duties of these branches are further defined by acts of Congress, including the creation of executive departments and courts inferior to the Supreme Court. Naming The full name of the republic is "United States of America". No other name appears in the Constitution, and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exploratorium
The Exploratorium is a museum of science, technology, and arts in San Francisco, California. Characterized as "a mad scientist's penny arcade, a scientific funhouse, and an experimental laboratory all rolled into one", the participatory nature of its exhibits and its self-identification as a center for informal learning has led to it being cited as the prototype for participatory museums around the world. The Exploratorium was founded by physicist and educator Frank Oppenheimer and opened in 1969 at the Palace of Fine Arts, its home until January 2, 2013. On April 17, 2013, the Exploratorium reopened at Piers 15 and 17 on San Francisco's Embarcadero. The historic interior and exterior of Pier 15 were renovated extensively prior to the move, and are divided into several galleries mainly separated by content, including the physics of seeing and listening (Light and Sound), Human Behavior, Living Systems, Tinkering (including electricity and magnetism), the Outdoor Gallery, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nationally Recognized Accrediting Agencies In The United States
Higher education accreditation in the United States is a peer review process by which the validity of degrees and credits awarded by higher education institutions is assured. It is coordinated by accreditation commissions made up of member institutions. It was first undertaken in the late 19th century by cooperating educational institutions, on a regional basis. The federal government began to play a limited role in higher education accreditation in 1952 with reauthorization of the G.I. Bill for Korean War veterans. The original GI Bill legislation had stimulated establishment of new colleges and universities to accommodate the influx of new students; but some of these new institutions were of dubious quality. The 1952 legislation designated the existing peer review process as the basis for measuring institutional quality; GI Bill eligibility was limited to students enrolled at accredited institutions included on a list of federally recognized accredited institutions published ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Higher Education
Higher education is tertiary education leading to award of an academic degree. Higher education, also called post-secondary education, third-level or tertiary education, is an optional final stage of formal learning that occurs after completion of secondary education. It represents levels 6, 7 and 8 of the 2011 version of the International Standard Classification of Education structure. Tertiary education at a non-degree level is sometimes referred to as further education or continuing education as distinct from higher education. The right of access to higher education The right of access to higher education is mentioned in a number of international human rights instruments. The UN International Covenant on Economic, Social and Cultural Rights of 1966 declares, in Article 13, that "higher education shall be made equally accessible to all, on the basis of capacity, by every appropriate means, and in particular by the progressive introduction of free education". In Europe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Educause
Educause is a nonprofit association in the United States whose mission is "to advance higher education through the use of information technology". Membership is open to institutions of higher education, corporations serving the higher education information technology market, and other related associations and organizations. Overview The association provides networking and other platforms for higher education IT professionals to generate and find content on best practices and to engage their peers. Examples include professional development opportunities, print and electronic publications, including e-books and the magazine ''Educause Review'' (), strategic policy advocacy, teaching and learning initiatives, applied research, special interest discussion groups, awards for leadership, and a resource center for IT professionals, such as Campus Privacy Officers, in higher education. Major initiatives of Educause include the Core Data Service, the Educause Center for Analysis and Resea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
