Asean Zone

Australia
Brunei Darussalam
Cambodia
Indonesia
Laos
Malaysia
Myanmar
Philippines
Singapore
Thailand
Timor-Leste

Eastern Zone

Vietnam
China PR
Chinese Taipei
Guam
Hong Kong
Japan
Korea DPR

Korea Republic
Macau
Mongolia
Northern Marina Islands

Central Zone

Afghanistan
Iran
Kyrgyzstan
Tajikistan
Turkmenistan
Uzbekistan

Western Zone

Bahrain
Iraq
Jordan
Kuwait
Lebanon
Oman
Palestine
Qatar
Saudi Arabia
Syria
United Arab Emirates

Southern Zone

Yemen
Bangladesh
Bhutan
India
Maldives
Nepal
Pakistan
Sri Lanka