How to restore the default dns settings for my domain

Solution :

Kindly follow the below procedure to reset the default nameserver for your domain

[1] Login to Plesk Control Panel
[2] Click Subscription
[3] Click your subscription name
[4] Choose website and domains tab
[5] Click DNS Settings
[6] Click Restore Defaults
[7] Confirm the restoration of the DNS zone
[8] Click ok