|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||513,747 (June 2017)|
|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 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).