Apex domains cannot have CNAME records.
Question and response
Question
dig rainmakernetwork.net. NS
Answer
rainmakernetwork.net. 5 NS ns2.rainmakernetwork.net.
rainmakernetwork.net. 5 NS ns1.rainmakernetwork.net.
Authority
The response has no authority records.
Additional
ns1.rainmakernetwork.net. 5 A 157.254.12.96
ns2.rainmakernetwork.net. 5 A 51.81.62.191
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0