Does anyone know how reliable .co is? Who manages the domain? I have a few .co domains (because the .com was bought by some reseller who wants to have >$1,000 f

Does anyone know how reliable .co is? Who manages the domain? I have a few .co domains (because the .com was bought by some reseller who wants to have >$1,000 for the domain) but somehow wary using them for production.