How to put my registered domain name into DNS server? Is there any DNS server available in this world?
I would assume that you will have to set up your own dns server (as part of an EC2 server ?) and have the IP address of that dns server put in as your domain's main DNS. I obviously don't know how your setup looks like, but you should be able to set up BIND and then change the entries of your domain wherever it's registered to point to that.