As announced, we are implementing measures of limitation of the service EPP today to protect its integrity. From today:
Any command that follows a <login> command is immediatly exectued but the next one is only taken into account 2 seconds later. The following commands are not penalized (unless they do not follow one of the limitation rules).
Reminder on the limitations put in place...[...]
For the same domain name, the <domain:check> commands will not be able to follow themselves more than 2 times every 4 seconds. Beyond this rate, a 2 second penalty will be applied on the following <domain:check> commands (for the same domain name). For instance, it is possible to have a <domain:check> follow a <domain:create> command that already followed a first <domain:check> on a same domain name without any penalty.
On the other hand, a customer making several <domain:check> commands on a same domain name will need to respect a 4 second delay between the first and the third call if he wishes not to be penalized.
Any <domain:create> command on an already existing domain name induce an additional 2 seconds in the answer time of this command.
Any <domain:info> command on a domain name that is not in your portfolio and for which you do not indicate the auth_info induce an additional 1 second in the answer time of this command.