AQ — Antarctica

Antarctica is the southernmost continent, a frozen landmass surrounding the South Pole. It has no permanent population, no government, and no capital city — it is governed by the Antarctic Treaty System signed in 1959 by 54 countries. Research stations from multiple nations operate year-round. Antarctica uses various currencies depending on the operating nation, with USD being common. For developers, the AQ country code is a fascinating edge case — it represents a continent with no permanent inhabitants and no government. The .aq domain is restricted to organizations with Antarctic operations. The +672 dialing code (shared with Australian external territories) provides some telecommunications coverage. Antarctica's timezones are unique — research stations often use the timezone of their supply country. Including AQ in country dropdown lists is debatable since it's not a sovereign state. Antarctica's extreme remoteness creates the ultimate offline-first design scenario. Climate research data from Antarctica is globally important, making AQ prominent in scientific datasets.