Systems and methods of the present invention provide for one or more server computers configured to: receive data encoding an update to a configuration setting in a DNS and an indication of an event deferring the update. After receiving the data and indication, the server(s) may: download, from a DNS server, a zone file comprising the configuration setting; modify the zone file using the update to generate a modified zone file comprising the update; determine, in accordance with the indication, whether the event has occurred; and if so, cause the DNS server to modify the zone file comprising the configuration setting in accordance with the modified zone file.