Jma.cn is tracked by us since April, 2011. Over the time it has been ranked as high as 859 799 in the world, while most of its traffic comes from China, where it reached as high as 54 349 position. It was owned by several entities, from 黄伟文 广东坚美铝型材厂有限公司 to 广东坚美铝型材厂（集团）有限公司, it was hosted by China Unicom Heilongjiang province network, China Unicom Hebei Province Network and others.

Jma has a decent Google pagerank and bad results in terms of Yandex topical citation index. We found that Jma.cn is poorly ‘socialized’ in respect to any social network. According to Google safe browsing analytics, Jma.cn is quite a safe domain with no visitor reviews.