Headquarters of the United Nations be sent by courier. The United Nations Postal Administration issues stamps, which must be used on stamped mail sent from the building. For award purposes, amateur radio operators consider the UN headquarters a separate "entity" under some award programs such as DXCC. For communications, UN organizations have their own internationally recognized ITU prefix, 4U. However, only contacts made with the UN Headquarters in New York, and the ITU count as separate entities. Other UN organizations such as the World Bank count for the state or country they are located in. The UN Staff Recreation Council operates amateur radio station 4U1UN,
United Nations Avenue United Nations Avenue United Nations Avenue (also known by its abbreviation, U.N. Avenue) is a major thoroughfare in Manila, Philippines. A commercial, residential and industrial artery, the avenue runs east–west through the near-center of the city linking Ermita and Rizal Park with the eastern districts. It is home to the World Health Organization Western Pacific headquarters. U.N. Avenue begins at a fork in Quirino Avenue Extension and Paz Mendoza Guazon Street, just west of Pandacan. It continues through the area of Tanque and Isla de Provisor in northern Paco district passing several rows of warehouses and a few institutional buildings.