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Wildcard DNS Record
A wildcard DNS record is a record in a DNS zone that will match requests for non-existent domain names. A wildcard DNS record is specified by using a * as the leftmost label (part) of a domain name, e.g. *.example.com. The exact rules for when a wildcard will match are specified in , but the rules are neither intuitive nor clearly specified. This has resulted in incompatible implementations and unexpected results when they are used. Definitions of DNS wildcards A wildcard DNS record in a zone file looks similar to this example: This wildcard DNS record will cause DNS lookups on domain names ending in example.com that do not exist to have MX records synthesized for them. So, a lookup for the MX record for somerandomname.example.com would return an MX record pointing to host1.example.com. Wildcards in the DNS are much more limited than other wildcard characters used in other computer systems. Wildcard DNS records have a single * (asterisk) as the leftmost DNS label, such as *.exa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DNS Zone
A DNS zone is a specific portion of the DNS namespace in the Domain Name System (DNS), which a specific organization or administrator manages. A DNS zone is an administrative space allowing more granular control of the DNS components, such as authoritative nameserver. The DNS is broken up into different zones, distinctly managed areas in the DNS namespace. DNS zones are not necessarily physically separated from one another; however, a DNS zone can contain multiple subdomains, and multiple zones can exist on the same server. The domain namespace of the Internet is organized into a hierarchical layout of subdomains below the DNS root domain. The individual domains of this tree may serve as delegation points for administrative authority and management. However, it is usually desirable to implement fine-grained delegation boundaries so that multiple sub-levels of a domain may be managed independently. Therefore, the domain name space is partitioned into areas (''zones'') for thi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Domain Name Registrar
A domain name registrar is a company, person, or office that manages the reservation of Internet domain names. A domain name registrar must be accredited by a generic top-level domain (gTLD) Domain name registry, registry or a country code top-level domain (ccTLD) registry. A registrar operates in accordance with the guidelines of the designated domain name registry, domain name registries. As of March 2024, there are 2,800 domain name registrars accredited by ICANN. History Creation The need for a central authority to assign or administer domain names emerged from collaboration among computer network pioneers as they created the Domain Name System in the 1980s. In a 1982 draft Request for Comments (RFC), editor Jonathan Postel proposed a "czar of domains." In her revisions of the draft, Jake Feinler crossed out "czar" and introduced the term "registrar." She designated the InterNIC, DOD Network Information Center, of which she was the head, as the registrar of top-level domai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BIND
BIND () is a suite of software for interacting with the Domain Name System (DNS). Its most prominent component, named (pronounced ''name-dee'': , short for ''name Daemon (computing), daemon''), performs both of the main DNS server roles, acting as an authoritative name server for DNS zone, DNS zones and as a recursive Resolver (DNS), resolver in the network. As of 2015, it is the most widely used domain name server software, and is the De facto standard, ''de facto'' standard on Unix-like operating systems. Also contained in the suite are various administration tools such as nsupdate and dig (command), dig, and a DNS resolver interface library. The software was originally designed at the University of California, Berkeley (UC Berkeley) in the early 1980s. The name originates as an acronym of ''Berkeley Internet Name Domain'', reflecting the application's use within UC Berkeley. The current version is BIND 9, first released in 2000 and still actively maintained by the Internet Sy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internet Software Consortium
Internet Systems Consortium, Inc., also known as ISC, is an American non-profit corporation that supports the infrastructure of the universal, self-organizing Internet by developing and maintaining core production-quality software, protocols, and operations. ISC has developed several key Internet technologies that enable the global Internet, including: BIND, ISC DHCP and Kea. Other software projects no longer in active development include OpenReg and ISC AFTR (an implementation of an IPv4/IPv6 transition protocol based on Dual-Stack Lite). ISC operates one of the 13 global authoritative DNS root servers, F-Root. Over the years a number of additional software systems were operated under ISC (for example: INN and Lynx) to better support the Internet's infrastructure. ISC also expanded their operational activities to include Internet hosting facilities for other open-source projects such as NetBSD, XFree86, kernel.org, secondary name-service (SNS) for more than 50 top-level d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Typosquatting
Typosquatting, also called URL hijacking, a sting site, a cousin domain, or a fake URL, is a form of cybersquatting, and possibly brandjacking which relies on mistakes such as typos made by Internet users when inputting a website address into a web browser. A user accidentally entering an incorrect website address may be led to any URL, including an alternative website owned by a cybersquatter. The typosquatter's URL will usually be ''similar'' to the victim's site address; the typosquatting site could be in the form of: *A misspelling, or foreign language spelling, of the intended site *A misspelling based on a typographical error *A plural of a singular domain name *A different top-level domain (e.g., .com instead of .org) *An abuse of the Country Code Top-Level Domain (ccTLD) ( .cm, .co, or .om instead of .com) Similar abuses: *Combosquatting – no misspelling, but appending an arbitrary word that appears legitimate, but that anyone could register. * Doppelganger doma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georgian Scripts
The Georgian scripts are the three writing systems used to write the Georgian language: #Asomtavruli, Asomtavruli, #Nuskhuri, Nuskhuri and #Mkhedruli, Mkhedruli. Although the systems differ in appearance, their Letter (alphabet), letters share the same names and alphabetical order and are written horizontally from Writing system#Directionality, left to right. Of the three scripts, Mkhedruli, once the official script of the Kingdom of Georgia and mostly used for the royal charters, is now the standard script for modern Georgian and its related Kartvelian languages, whereas Asomtavruli and Nuskhuri are used only by the Georgian Orthodox Church, in ceremonial religious texts and Iconography#Christian iconography, iconography. It is one of the three Alphabets of the South Caucasus, historical alphabets of the South Caucasus. Georgian scripts are unique in their appearance and their exact origin has never been established; however, in strictly structural terms, their alphabetical or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after India, representing 17.4% of the world population. China spans the equivalent of five time zones and Borders of China, borders fourteen countries by land across an area of nearly , making it the list of countries and dependencies by area, third-largest country by land area. The country is divided into 33 Province-level divisions of China, province-level divisions: 22 provinces of China, provinces, 5 autonomous regions of China, autonomous regions, 4 direct-administered municipalities of China, municipalities, and 2 semi-autonomous special administrative regions. Beijing is the country's capital, while Shanghai is List of cities in China by population, its most populous city by urban area and largest financial center. Considered one of six ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internationalized Domain Name
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. The DNS, which performs a lookup service to translate mostly user-friendly names into network addresses for locating Internet resources, is restricted in practice to the use of ASCII characters, a practical limitation that initially set the standard for acceptable domain names. The internationalization of domain names is a technical solution to translate names written in language-native scripts into an ASCII text representation that is compatible with the DNS. Internationalized domain names can only be used with applications that a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Museum
A museum is an institution dedicated to displaying or Preservation (library and archive), preserving culturally or scientifically significant objects. Many museums have exhibitions of these objects on public display, and some have private collections that are used by researchers and specialists. Museums host a much wider range of objects than a library, and they usually focus on a specific theme, such as the art museums, arts, science museums, science, natural history museums, natural history or Local museum, local history. Public museums that host exhibitions and interactive demonstrations are often tourist attractions, and many draw large numbers of visitors from outside of their host country, with the List of most-visited museums, most visited museums in the world attracting millions of visitors annually. Since the establishment of Ennigaldi-Nanna's museum, the earliest known museum in ancient history, ancient times, museums have been associated with academia and the preserva ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Site Finder
Site Finder was a wildcard DNS record for all .com and .net unregistered domain names, run by .com and .net top-level domain operator VeriSign between 15 September 2003 and 4 October 2003. Site Finder All Internet users who accessed any unregistered domains in the .com and .net domain space were redirected to a VeriSign web portal with information about VeriSign products and links to "partner" sites. This gave VeriSign the advantage of receiving greater revenue from advertising and from users wishing to register these domain names. It had the effect of capturing the web traffic for several million mistyped or experimental web accesses per day, and meant that VeriSign effectively owned all possible .com and .net domains that had not been bought by others, and could use them as an advertising platform. VeriSign described the change as an attempt to improve the Web browsing experience for the naive user, without mentioning any use of the domain name system other than by browsers. Ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VeriSign
Verisign, Inc. is an American company based in Reston, Virginia, that operates a diverse array of network infrastructure, including two of the Internet's thirteen root nameservers, the authoritative registry for the , , and generic top-level domains and the country-code top-level domains, and the back-end systems for the and sponsored top-level domains. In 2010, Verisign sold its authentication business unit – which included Secure Sockets Layer (SSL) certificate, public key infrastructure (PKI), Verisign Trust Seal, and Verisign Identity Protection (VIP) services – to NortonLifeLock, Symantec for $1.28 billion. The deal capped a multi-year effort by Verisign to narrow its focus to its core infrastructure and security business units. Symantec later sold this unit to DigiCert in 2017. On October 25, 2018, Neustar, NeuStar, Inc. acquired VeriSign's Security Service Customer Contracts. The acquisition effectively transferred Verisign Inc.'s Denial-of-service attack, Distrib ... [...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] |
