Apex domains cannot have CNAME records.
Question and response
Question
dig upsvip.com. NS
Answer
upsvip.com. 5 NS cmtu.mt.ns.els-gms.att.net.
upsvip.com. 5 NS cbru.br.ns.els-gms.att.net.
upsvip.com. 5 NS auth2.dns.cogentco.com.
upsvip.com. 5 NS nsa.ups.com.
upsvip.com. 5 NS nsb.ups.com.
upsvip.com. 5 NS auth1.dns.cogentco.com.
Authority
The response has no authority records.
Additional
nsa.ups.com. 5 A 153.2.242.115
nsb.ups.com. 5 A 153.2.244.155
cmtu.mt.ns.els-gms.att.net. 2 A 99.99.99.132
cmtu.mt.ns.els-gms.att.net. 2 AAAA 2001:1890:1ff:9f1:99:99:99:132
auth2.dns.cogentco.com. 1 AAAA 2001:550:1:b:0:0:0:d
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0