Challenge.co is tracked by us since April, 2011. Over the time it has been ranked as high as 9 439 in the world, while most of its traffic comes from USA, where it reached as high as 85 970 position. It was owned by several entities, from .CO Founders program .CO Internet S.A.S. to REDACTED FOR PRIVACY of Contact Privacy Inc. Customer 0147129308, it was hosted by Mosso Hosting, Tucows.com Co. and others. While .CO Internet S.A.S. was its first registrar, now it is moved to .

Challenge has a decent Google pagerank and bad results in terms of Yandex topical citation index. We found that Challenge.co is moderately ‘socialized’ in respect to Facebook shares (8.65K), Google+ shares (879) and Twitter mentions (226). According to MyWot, Siteadvisor and Google safe browsing analytics, Challenge.co is quite a safe domain with no visitor reviews.