Apex domains cannot have CNAME records.
Question and response
Question
dig ipromedia.us. NS
Answer
ipromedia.us. 4 NS ns-675.awsdns-20.net.
ipromedia.us. 4 NS ns-1616.awsdns-10.co.uk.
ipromedia.us. 4 NS ns-372.awsdns-46.com.
ipromedia.us. 4 NS ns-1124.awsdns-12.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0