Native to:
Angola,
Assam,
Bangladesh,
Benin,
Botswana,
Burkina,
Burundi,
Cambodia,
Cameroon,
Cape Provinces,
Central African Republic,
Chad,
Chagos Archipelago,
China South-Central,
China Southeast,
Cocos (Keeling) Is.,
Comoros,
Congo,
Djibouti,
East Himalaya,
Egypt,
Eritrea,
Ethiopia,
Free State,
Ghana,
Guinea,
Gulf of Guinea Is.,
Hainan,
India,
Ivory Coast,
Jawa,
Kenya,
KwaZulu-Natal,
Laccadive Is.,
Laos,
Lesser Sunda Is.,
Liberia,
Madagascar,
Malawi,
Malaya,
Maldives,
Maluku,
Mauritius,
Mozambique,
Myanmar,
Namibia,
Nepal,
New Guinea,
Nigeria,
Northern Provinces,
Pakistan,
Philippines,
Rodrigues,
Rwanda,
Saudi Arabia,
Seychelles,
Sierra Leone,
Socotra,
Somalia,
Sri Lanka,
Sudan,
Sulawesi,
Sumatera,
Swaziland,
Taiwan,
Tanzania,
Thailand,
Togo,
Uganda,
Vietnam,
West Himalaya,
Yemen,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Nicobar Is.