Editing Subdomain (section)

== Uses ==
===United Kingdom===
In the [[United Kingdom]], the second-level domain names are standard and branch off from the [[top-level domain]]. For example:

* .ac.uk: [[academic]] ([[tertiary education]], [[further education colleges]] and [[research institute|research establishments]]) and [[learned society|learned societies]]
* .co.uk: general use (usually [[Commercial enterprise|commercial]])
* .gov.uk: [[government]] (central and local)
* .judiciary.uk: [[court]]s (to be introduced in the near future)<ref>{{cite web |title=UK court systems set to adopt judiciary.uk domain names |url=https://www.bbc.co.uk/news/technology-15860533 |publisher=[[BBC News]] |date=23 November 2011 |access-date=26 February 2014 |archive-date=4 July 2018 |archive-url=https://web.archive.org/web/20180704235839/https://www.bbc.co.uk/news/technology-15860533 |url-status=live }}</ref>
* .ltd.uk: [[limited company|limited companies]]
* .me.uk: general use (usually [[person]]al)
* .mod.uk: [[Ministry of Defence (United Kingdom)|Ministry of Defence]] and [[HM Forces]] public sites
* .net.uk: [[ISP]]s and [[Telecommunications company|network companies]] (unlike [[.net]], use is restricted to these users)
* .nhs.uk: [[National Health Service]] institutions
* .nic.uk: [http://www.nic.uk/registrars/becomeregistrar/taglist/ network use only] ([[Nominet UK]])
* .org.uk: general use (usually for [[non-profit organisation]]s)
* .parliament.uk: parliamentary use (only for the [[UK Parliament]] and the [[Scottish Parliament]])
* .plc.uk: [[public limited company|public limited companies]]
* .police.uk: [[UK police|police forces]]
* .sch.uk: [[Local education authority|Local Education Authorities]], [[school]]s, [[Primary education|primary]] and [[secondary education]], [[community education]]

=== Vanity domain ===
A [[vanity domain]] is a subdomain of an ISP's domain that is aliased to an individual user account, or a subdomain that expresses the individuality of the person on whose behalf it is registered.
<ref>{{cite news |last1=John |first1=Alex |title=Subdomain |url=https://thedomainrobot.com/blog/what-is-a-subdomain/ |access-date=29 November 2021 |archive-date=20 August 2024 |archive-url=https://web.archive.org/web/20240820200422/https://thedomainrobot.com/blog/what-is-a-subdomain/ |url-status=live }}</ref>
===Server cluster===
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Depending on application, a [[Resource record|record]] inside a domain, or subdomain might refer to a [[hostname]], or a service provided by a number of machines in a cluster. Some websites use different subdomains to point to different [[server cluster]]s. For example, <code>[[example.com|www.example.com]]</code> points to Server Cluster 1 or Datacentre 1, and <code>www2.example.com</code> points to Server Cluster 2 or Datacentre 2 etc.

====Subdomains versus directories====
Subdomains are different from directories. Directories are physical folders on an actual computer, while subdomains are a part of the [[URL]] that can be routed to any file or folder on the server machine.