If I apply for a domain name abc.com in nets and bind 1.1.1.1, so while I'm in the middle of DNS to root DNS for com DNS address first, and then access com DNS address, and then is com to my abc.com binding ip1.1.1.1 or a DNS address, if it is a DNS address, and then the DNS address is how many? I have registered the domain name d.abc.com, top-level domain names should be unable to return the IP can only return to the abc.com DNS, but we didn't build a DNS abc.com!!!!!