AR — Argentina

Argentina is the eighth-largest country in the world, stretching from the subtropical north to Patagonia and Tierra del Fuego in the south. Buenos Aires, the capital, is one of South America's most cosmopolitan cities. Argentina is known for tango, beef, wine, and football. The Argentine Peso (ARS) has experienced significant volatility and multiple devaluations, creating challenges for financial applications. For developers, the AR country code maps to the es-AR locale, one of the most important Spanish locale variants — Argentine Spanish has distinctive voseo pronoun usage and unique vocabulary. The .ar domain is widely used domestically, and +54 is the dialing code. Argentina's currency instability means applications must handle frequent exchange rate changes and potentially multiple parallel exchange rates (official, blue dollar, MEP). The country has a large and skilled developer community, making it a major source of technical talent in Latin America.