"Most of the top 50 is unchanged, with Germany, Brazil and Belgium still the leading trio at the summit of the same top ten as last month", the statement added. South Africa remain 15th in Africa.
Stuart Baxter's Bafana side recently beat hosts Zambia to win the Four-Nations tournament in March.
The Four Nations win though comes as little compensation for Baxter's men since failing dismally to qualify for the 2018 Soccer World Cup in Russian Federation, with the rankings calculated over a rolling four-year period.
Nigeria's next friendly opponent DR Congo, also retained their number 3 position in Africa and 38th in the world with Nigeria also remaining 6th on the continent while Russia-bound Tunisia leads the way as the only African country in the top 20.
Kenya had dropped three places in the April ranking following poor performances against lowly ranked Comoros and the Central African Republic.
Federation Internationale de Football Association will release the next rankings June 7, 2018, three days after the submission of the World Cup list.
Meanwhile, there was no movement also for Super Eagles World Cup opponents of Argentina, Croatia and Iceland as they all retained their last month's positions, 5th, 18th and 22nd respectively.