| title | slug | page-type |
|---|---|---|
DNS |
Glossary/DNS |
glossary-definition |
{{GlossarySidebar}}
DNS (Domain Name System) is a hierarchical and decentralized naming system for Internet connected resources. DNS maintains a list of {{Glossary("domain name","domain names")}} along with the resources, such as IP addresses, that are associated with them.
The most prominent function of DNS is the translation of human-friendly domain names (such as mozilla.org) to a numeric {{Glossary("IP address")}} (such as 192.0.2.172); this process of mapping a domain name to the appropriate IP address is known as a DNS lookup. By contrast, a reverse DNS lookup (rDNS) is used to determine the domain name associated with an IP address.
- Understanding domain names
- Domain Name System on Wikipedia