This is a sky blue flag. The white pattern on it is the outline of Antarctica. It is displayed as AQ on some platforms. It generally represents Antarctica Pole and Antarctica. There are no countries and settlers in Antarctica, but there are more than 60 observatories and more than 100 research bases.
🇦🇶 is the Emoji of a country/region‘s flag, and its meaning is flag: Antarctica. The Emoji 🇦🇶 is composed of two regional indicator letters, namely 🇦 and 🇶. The country/region's 2-letter code for Antarctica is AQ, so the letters corresponding to the two region indicator letters are A and Q. 🇦🇶 is displayed as a whole flag on most platforms and as a two-letter symbol on a few platforms.