J'ai verifie pour dyndns a l'instant, et je m'etais pas trompe...
Our Dynamic DNS service costs a flat rate of $50/year, with no setup fee. This fee does not include the registration of your domain name. The service includes the redirection of a registered domain name (e.g., mydomain.com), along with its subdomains (e.g., anything.mydomain.com) to a dynamic IP address, as described on our Service Info page. We no longer offer accounts under our domain (username.dyndns.com); all new accounts require a registered domain name. Accounts also include up to four MX entries for your domain. Additional domains pointing to the same IP address can be purchased for $25/domain or $100/5 domains.