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2. Domain Name System - Wikipedia

   en.wikipedia.org/wiki/Domain_Name_System

   The domain name space consists of a tree data structure. Each node or leaf in the tree has a label and zero or more resource records (RR), which hold information associated with the domain name. The domain name itself consists of the label, concatenated with the name of its parent node on the right, separated by a dot. [23]: §3.1

3. Domain name - Wikipedia

   en.wikipedia.org/wiki/Domain_name

   An annotated example of a domain name. 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 ...

4. 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.

5. DNS zone - Wikipedia

   en.wikipedia.org/wiki/DNS_zone

   A zone always starts at a domain boundary to include all leaf nodes (hosts) in the domain or ends at the boundary of another independently managed zone. As each domain is further divided into sub-domains, each becoming a DNS zone with its own set of administrators and DNS servers, the tree grows with the largest number of leaf nodes at the bottom.

6. What is a DNS server? How Domain Name System servers ... - AOL

   www.aol.com/news/dns-server-domain-name-system...

   A DNS server - short for Domain Name System server - helps your web browser connect to the internet and load websites properly.

7. Internet Assigned Numbers Authority - Wikipedia

   en.wikipedia.org/wiki/Internet_Assigned_Numbers...

   The Internet Assigned Numbers Authority (IANA) is a standards organization that oversees global IP address allocation, autonomous system number allocation, root zone management in the Domain Name System (DNS), media types, and other Internet Protocol–related symbols and Internet numbers.

8. Domain name registrar - Wikipedia

   en.wikipedia.org/wiki/Domain_name_registrar

   A drop catcher is a domain name registrar that offers the service of attempting to quickly register a given domain name for a customer if that name becomes available—that is, to "catch" a "dropped" name—when the domain name's registration expires and is then deleted, either because the registrant abandons the domain or because the ...

9. Top-level domain - Wikipedia

   en.wikipedia.org/wiki/Top-level_domain

   Originally, the top-level domain space was organized into three main groups: Countries, Categories, and Multiorganizations. [2] An additional temporary group consisted of only the initial DNS domain, .arpa, [3] and was intended for transitional purposes toward the stabilization of the domain name system.