Apex domains cannot have CNAME records.
Question and response
Question
dig jivehosted.com. NS
Answer
jivehosted.com. 4 NS ns-1257.awsdns-29.org.
jivehosted.com. 4 NS ns-988.awsdns-59.net.
jivehosted.com. 4 NS ns-125.awsdns-15.com.
jivehosted.com. 4 NS ns-1817.awsdns-35.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0