|Introduced||23 September 1987|
|TLD type||Country code top-level domain|
|Sponsor||Government of Argentina (SLyTP)|
|Intended use||Entities connected with Argentina|
|Actual use||Very popular in Argentina|
|Registered domains||670,633 (November 2022)|
|Registration restrictions||Must have contact with address in Argentina, but registrant may be foreign; some subdomains have particular restrictions|
|Structure||Registrations are at third level beneath second level labels|
|Documents||Government resolution on domain registration|
.ar is the Internet country code top-level domain (ccTLD) for Argentina. It is administered by NIC Argentina. Registering an .ar domain (like website.ar) directly is now allowed. Previously, only 9 of the second-level domains listed below were open for registration, and a local presence in Argentina was required. Recently[when?] the extension has become synonymous with Augmented Reality and is being by many prominent AR and XR startups. 
As of January 2017 there are currently 12 second-level domains.
In November 2008, a resolution approved the use of special characters in domain names, including ñ, ç, á, é, í ó, ú, ä, ë, ï, ö, and ü. The .gob.ar domain was also approved for government entities (.gob stands for "gobierno", government in Spanish).