It ' s twenty a week right now , for certificates per registered domain . That ' s 20 subdomains per week , if you put one subdomain on each certificate , or up to 2 , 000 if you bundle 100 per cert that ' s the limit per cert . There ' s a separate limit of five per week for identical certificates basically for clients stuck in an infinite loop requesting a certificate for the same domain again and again . They also have exceptions for renewal if you ever obtained a certificate for a set of domains , you ' ll be able to renew that even if that domain is currently rate limited . <| sep |> No . Global temperature increases don ' t mean more UV all over the planet . Also they usually disrupt some major weather patterns , which tends to lead to ice ages . So no , sadly you ' re not going to get jive anytime soon .