There is one place named Onsi in Congo.
All places in the world called "Onsi".
Mbaya (6)Mbomo (5)Lékana (4)Dzanga (4)Mbaka (4)Kongo (4)Yanga (4)Yama (4)Mboma (4)Nkoua (4)Okassa (3)Koungou (3)Mpasa (3)Ngélé (3)Nkana (3)Poto-Poto (3)Yaya (3)Abala (3)Bamba (3)Kaye (3)Mobili (3)Nzabi (3)Paka (3)Bango (3)Bonga (3)Inga (3)Ilanga (3)Kouka (3)Lessia (3)Obili (3)