Apex domains cannot have CNAME records.
Question and response
Question
dig jsonline.com. NS
Answer
jsonline.com. 5 NS dns2.p05.nsone.net.
jsonline.com. 5 NS dns3.p05.nsone.net.
jsonline.com. 5 NS ns04.gannett-dns.com.
jsonline.com. 5 NS ns03.gannett-dns.com.
jsonline.com. 5 NS ns02.gannett-dns.com.
jsonline.com. 5 NS dns1.p05.nsone.net.
jsonline.com. 5 NS ns01.gannett-dns.com.
jsonline.com. 5 NS dns4.p05.nsone.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0