Éric Chelle’s side played two games at the Unity Cup invitational tournament in London last month.
The Three-time African champions defeated the Warriors of Zimbabwe 2-0 and recorded a 3-0 victory over the Reggae Boyz of Jamaica.
Nigeria started June with a friendly against Poland in Warsaw, which ended in a 2-2 draw.
The Super Eagles lost 2-1 to Portugal in another international friendly in Leiria on Wednesday night.
They also maintained third position in Africa behind Atlas Lions of Morocco and Teranga Lions of Senegal.
Desert Foxes of Algeria and Pharaohs of Egypt complete the top five teams on the continent.
Globally, the top five remain unchanged, with world champions Argentina maintaining number one spot ahead of Spain, France, England, and Portugal.
The next FIFA World rankings will be released on Monday, July 20.