How can I be sure that my domain is locked at the Registry level?
The WHOIS lookup tool will enable you to check if your domains are locked at the Registry. In the results, there are up to 4 “Status” fields: Delete, Renew, Transfer and Update. Delete, Transfer and Update are the critical statuses for locking your domain name. Using Update as an example, if the status for Update says “serverUpdateProhibited” then your domain name is locked at the Registry level and cannot be unlocked (and therefore changed) without “out-of-band” authentication between the Registry and your registrar. This “Server” and “Prohibited” status must appear for all three statuses (Update, Delete, Transfer) for the name to be on Registry Lock.
If the WHOIS results for your domain name only indicates “clientUpdateProhibited” this means that your domain name has been locked by your registrar, but not at the registry. This registrar locking may still leave your domain name vulnerable to various types of malicious activity. If your WHOIS results show both “client” and “server” status as “Prohibited,” your domain names are locked.