In which region of the International Telecommunication Union are Australia, Japan, and Southeast Asia located?

The International Telecommunication Union (ITU) divides the world into three distinct geographic regions to manage global radio frequency allocations and mitigate interference. Region 3 encompasses most of Asia and Oceania. This includes countries like Australia, Japan, and those in Southeast Asia. Knowing these regions is important because certain frequency bands are allocated differently depending on which region you are operating in. The other options are incorrect: Region 1 covers Europe and Africa, Region 2 covers the Americas, and Region 4 is entirely fictitious.