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2. Domain Name System - Wikipedia

   en.wikipedia.org/wiki/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 in the Internet or other Internet Protocol (IP) networks. It associates various information with domain names (identification strings) assigned to each of the associated entities.

3. Internet Assigned Numbers Authority - Wikipedia

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

   Internet. 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. [1] [2]

4. CNAME record - Wikipedia

   en.wikipedia.org/wiki/CNAME_record

   A Canonical Name ( CNAME) record is a type of resource record in the Domain Name System (DNS) that maps one domain name (an alias) to another (the canonical name). [1] This can prove convenient when running multiple services (like an FTP server and a web server, each running on different ports) from a single IP address.

5. Fully qualified domain name - Wikipedia

   en.wikipedia.org/wiki/Fully_qualified_domain_name

   Fully qualified domain name. A fully qualified domain name ( FQDN ), sometimes also referred to as an absolute domain name, [1] is a domain name that specifies its exact location in the tree hierarchy of the Domain Name System (DNS). It specifies all domain levels, including the top-level domain and the root zone. [2]

6. Top-level domain - Wikipedia

   en.wikipedia.org/wiki/Top-level_domain

   While this does create apex DNS records of type A and MX, they do not qualify as a dotless domain, as the records should not point to real servers. For instance, the A record contains the IP 127.0.53.53, a loopback address (see IPv4 § Addressing), picked as a mnemonic to indicate a DNS-related problem, as DNS uses port 53. Pseudo-domains

7. Dynamic DNS - Wikipedia

   en.wikipedia.org/wiki/Dynamic_DNS

   Dynamic DNS. Dynamic DNS ( DDNS) is a method of automatically updating a name server in the Domain Name System (DNS), often in real time, with the active DDNS configuration of its configured hostnames, addresses or other information. The term is used to describe two different concepts. The first is "dynamic DNS updating" which refers to systems ...

8. Multicast DNS - Wikipedia

   en.wikipedia.org/wiki/Multicast_DNS

   Multicast DNS. In computer networking, the multicast DNS ( mDNS) protocol resolves hostnames to IP addresses within small networks that do not include a local name server. It is a zero-configuration service, using essentially the same programming interfaces, packet formats and operating semantics as unicast Domain Name System (DNS).

9. dig (command) - Wikipedia

   en.wikipedia.org/wiki/Dig_(command)

   dig (command) dig is a network administration command-line tool for querying the Domain Name System (DNS). dig is useful for network troubleshooting and for educational purposes. [2] It can operate based on command line option and flag arguments, or in batch mode by reading requests from an operating system file.