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  2. Domain name - Wikipedia

    en.wikipedia.org/wiki/Domain_name

    These are the names directly to the left of .com, .net, and the other top-level domains. As an example, in the domain example.co.uk, co is the second-level domain. Next are third-level domains, which are written immediately to the left of a second-level domain. There can be fourth- and fifth-level domains, and so on, with virtually no limitation.

  3. List of Internet top-level domains - Wikipedia

    en.wikipedia.org/wiki/List_of_Internet_top-level...

    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. [1]

  4. Domain Name System - Wikipedia

    en.wikipedia.org/wiki/Domain_Name_System

    Domain name resolvers determine the domain name servers responsible for the domain name in question by a sequence of queries starting with the right-most (top-level) domain label. A DNS resolver that implements the iterative approach mandated by RFC 1034; in this case, the resolver consults three name servers to resolve the fully qualified ...

  5. Top-level domain - Wikipedia

    en.wikipedia.org/wiki/Top-level_domain

    IDN ccTLDs are an application of the internationalized domain name (IDN) system to top-level Internet domains assigned to countries, or independent geographic regions. ICANN started to accept applications for IDN ccTLDs in November 2009, [6] and installed the first set into the Domain Names System in May 2010. The first set was a group of ...

  6. Generic top-level domain - Wikipedia

    en.wikipedia.org/wiki/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 ...

  7. Domain name registry - Wikipedia

    en.wikipedia.org/wiki/Domain_name_registry

    A domain name registry is a database of all domain names and the associated registrant information in the top level domains of the Domain Name System (DNS) of the Internet that enables third party entities to request administrative control of a domain name. Most registries operate on the top-level and second-level of the DNS.

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