Team Melli leads Asian continent, 14 places above South Korea.
Japan and Australia are 55th and 58th, respectively.
Argentina retains the top spot while Germany is back into the second place, ahead of Belgium, who drop to third.
Spain makes a notable return to the top 10 and sits one place higher than 7th placed Brazil.
The results of 149 international 'A' matches have been taken into account in the October edition of the FIFA World Ranking, of which 48 were World Cup qualifiers in the CONCACAF (12), Asia (30) and Oceania (6) zones, and 75 were qualifiers for confederation championships in Europe (50) and Africa (25). The other 26 matches were friendlies. This takes the total number of matches evaluated so far this year to 668.