ReturnCodes["good"]="DNS hostname update successful."
ReturnCodes["nochg"]="IP address is current, no update performed."
ReturnCodes["nohost"]="Hostname supplied does not exist under specified account."
ReturnCodes["badauth"]="Invalid username password combination."
ReturnCodes["badagent"]="The user agent was not sent or HTTP method is not permitted (we recommend use of GET request method)."
ReturnCodes["!donator"]="An option available only to credited users (such as offline URL) was specified, but the user is not a credited user."
ReturnCodes["abuse"]="The hostname specified is blocked for update abuse."
ReturnCodes["911"]="A fatal error on our side such as a database outage. Retry the update no sooner 30 minutes."
ReturnCodes["notfqdn"]="The hostname specified is not a fully-qualified domain name (not in the form hostname.dyndns.org or domain.com)."
ReturnCodes["0"]="IP address is current, no update performed."
ReturnCodes["1"]="Update successful."
ReturnCodes["2"]="Hostname supplied does not exist under specified account."
ReturnCodes["3"]="Invalid password."
ReturnCodes["4"]="Invalid username."