Apex domains cannot have CNAME records.
Question and response
Question
dig maxiship.com. NS
Answer
maxiship.com. 1 NS cmtu.mt.ns.els-gms.att.net.
maxiship.com. 1 NS nsa.ups.com.
maxiship.com. 1 NS nsb.ups.com.
maxiship.com. 1 NS cbru.br.ns.els-gms.att.net.
maxiship.com. 1 NS auth2.dns.cogentco.com.
maxiship.com. 1 NS auth1.dns.cogentco.com.
Authority
The response has no authority records.
Additional
nsa.ups.com. 4 A 153.2.242.115
nsb.ups.com. 4 A 153.2.244.155
auth1.dns.cogentco.com. 1 A 66.28.0.14
auth2.dns.cogentco.com. 1 A 66.28.0.30
auth1.dns.cogentco.com. 1 AAAA 2001:550:1:a:0:0:0:d
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0