Response Code Description

Response	Status	Description
good 1.2.3.4	Success	The update was successful. Followed by a space and the updated IP address. You should not attempt another update until your IP address changes.
nochg 1.2.3.4	Success	The supplied IP address is already set for this host. You should not attempt another update until your IP address changes.
nohost	Error	The hostname does not exist, or does not have Dynamic DNS enabled.
badauth	Error	The username / password combination is not valid for the specified host.
notfqdn	Error	The supplied hostname is not a valid fully-qualified domain name.
badagent	Error	Your Dynamic DNS client is making bad requests. Ensure the user agent is set in the request, and that you’re only attempting to set an IPv4 address. IPv6 is not supported.
abuse	Error	Dynamic DNS access for the hostname has been blocked due to failure to interpret previous responses correctly.
911	Error	An error happened on our end. Wait 5 minutes and retry.