Apex domains cannot have CNAME records.
Question and response
Question
dig jpj.net. NS
Answer
jpj.net. 5 NS os1.jpj.net.
jpj.net. 5 NS ns.jpj.net.
Authority
The response has no authority records.
Additional
ns.jpj.net. 5 A 24.105.167.14
os1.jpj.net. 5 A 174.138.39.44
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0