日本体操協会 is the sports governing body in Japan founded in 1930.
According to PR-model, jpn-gym.or.jp is ranked 44,622nd in multilingual Wikipedia, in particular this website is ranked 3,158th in Japanese Wikipedia.
The website is placed before carbinesforcollectors.com and after seinenza-eihou.com in the BestRef global ranking of the most important sources of Wikipedia.