AT — Austria

Austria is a landlocked Central European country known for its Alpine scenery, imperial history, and cultural contributions including classical music, art, and architecture. Vienna, the capital, consistently ranks as one of the world's most liveable cities and was the seat of the Habsburg Empire. Austria is an EU member state and Eurozone country. For developers, the AT country code maps to the de-AT locale for Austrian German, which has distinct vocabulary, grammar, and spelling differences from Standard German (de-DE). The .at domain is one of Europe's most established ccTLDs, and +43 is the dialing code. Austrian German locale differences from de-DE include different month names (Jänner vs Januar) and food terminology, requiring proper locale-specific resources. Austria's IBAN format (AT + 18 digits) and VAT number format (ATU + 8 digits) follow EU standards. Vienna's role as a UN headquarters city and tech hub makes it important in international application development.