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2. Domain Name System - Wikipedia

   en.wikipedia.org/wiki/Domain_Name_System

   A DNS name server is a server that stores the DNS records for a domain; a DNS name server responds with answers to queries against its database. The most common types of records stored in the DNS database are for start of authority ( SOA ), IP addresses ( A and AAAA ), SMTP mail exchangers (MX), name servers (NS), pointers for reverse DNS ...

3. Google Public DNS - Wikipedia

   en.wikipedia.org/wiki/Google_Public_DNS

   Google Public DNS. Google Public DNS is a Domain Name System (DNS) service offered to Internet users worldwide by Google. It functions as a recursive name server . Google Public DNS was announced on December 3, 2009, [1] in an effort described as "making the web faster and more secure." [2] [3] As of 2018, it is the largest public DNS service ...

4. Domain name registry - Wikipedia

   en.wikipedia.org/wiki/Domain_name_registry

   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. 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.

6. Reverse DNS lookup - Wikipedia

   en.wikipedia.org/wiki/Reverse_DNS_lookup

   In computer networks, a reverse DNS lookup or reverse DNS resolution ( rDNS) is the querying technique of the Domain Name System (DNS) to determine the domain name associated with an IP address – the reverse of the usual "forward" DNS lookup of an IP address from a domain name. [1] The process of reverse resolving of an IP address uses PTR ...

7. 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]

8. 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]

9. DNS root zone - Wikipedia

   en.wikipedia.org/wiki/DNS_root_zone

   The DNS root zone is the top-level DNS zone in the hierarchical namespace of the Domain Name System (DNS) of the Internet. Before October 1, 2016, the root zone had been overseen by the Internet Corporation for Assigned Names and Numbers (ICANN) which delegates the management to a subsidiary acting as the Internet Assigned Numbers Authority ...