How to use Openprovider nameservers to host zones from another master server?
In order to use Openprovider nameservers as slaves, one has to configure Access Control Lists on the master nameserver to allow AXFR transfers from the following IP addresses:
Above IP addresses need to be added in the server software the reseller is using like Plesk.
To check whether or not Openprovider can read one's master server navigate to DNS management > DNS Checks and select button. Enter the domain name and the IP address of the master nameserver, to see the result of the check.
Last but not least, the zone file of the master nameserver should contain the NS record of Openprovider - ns1.openprovider.nl.
The interface of zone adding is almost the same as for the master ones. Navigate to DNS management > New DNS zone page in RCP and choose the appropriate type of the zone:
Once done with the name, proceed to next steps where you can configure the IP address of the master server:
The records will propagate within a couple of minutes.
Note: The first time you've whitelisted the IP address in your software it can take up to 1 hour before the slave zone will start propagating.