The Domain Name Service (DNS) is the internet service that translates Domain Names into the corresponding internet IP Address.
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Search for and register domains and manage your DNS settings with a RESTful Domain API.
Google Public DNS is a Domain Name System (DNS) service offered by Google. It functions as a Recursive Name Server providing domain name resolution for any host on the Internet. - wikipedia 
WHOIS (pronounced as the phrase who is) is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system, but is also used for a wider range of other information - wikipedia
# Related Software
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* Check DNS propagation - whatsmydns.net
* dnspark.zendesk.com
* Dynamic DNS dyn.com
* Google Public DNS
* Google Cloud DNS
# See Also
BIND, or named, is the most widely used Domain Name System (DNS) software on the Internet. On Unix-like operating systems it is the de facto standard.
Returns a list of the DNS servers listed in the system's TCP/IP network configuration.
dns-sd is a commandline tool to manipulate Bonjour (Zeroconf) services. You can find the Manpage online here - developer.apple.com
Wide-Area Bonjour uses DNS Service Discovery [DNS-SD] along with DNS Update [RFC 2136] and TSIG security [RFC 2845]. Like most Linux distributions, Mac OS X includes the standard BIND DNS Server (named), which supports DNS Update - dns-sd.org
The internet's domain name system (dns) allows for * to represent all possible subdomains of a given domain name. We use wildcard dns records to direct all subdomains of fed.wiki.org to a single server, a wiki farm.
DNS hijacking or DNS redirection is the practice of subverting the resolution of Domain Name System (DNS) queries. This can be achieved by malware that overrides a computer's TCP/IP configuration to point at a rogue DNS server under the control of an attacker, or through modifying the behaviour of a trusted DNS server so that it does not comply with internet standards - wikipedia