The page describing SSL certificates for domains in the .рф zone is misleading, and the support team sends you away.
I paid for the certificate through the link "SSL Security Certificates Russia .рф - RapidSSL." Then, when I tried to enter the CSR, the authorization center rejected it, stating that the domain was invalid.
The support service gently told me to go deal with the authorization center on my own (even though I paid for the order at 101domain, not somewhere else they sent me).
Later, I received a response from RapidSSL saying that ".xn--p1ai is not a registered top-level domain." In other words, it's basically impossible to obtain a RapidSSL certificate for .рф.
