Apex domains cannot have CNAME records.
Question and response
Question
dig ipower.com. NS
Answer
ipower.com. 5 NS ns2.ipowerdns.com.
ipower.com. 5 NS ns1.ipowerweb.net.
ipower.com. 5 NS ns1.ipowerdns.com.
ipower.com. 5 NS ns1.ipower.com.
ipower.com. 5 NS ns2.ipower.com.
ipower.com. 5 NS ns2.ipowerweb.net.
Authority
The response has no authority records.
Additional
ns1.ipower.com. 5 A 66.96.142.144
ns1.ipowerweb.net. 5 A 66.96.142.103
ns2.ipower.com. 5 A 65.254.254.156
ns2.ipowerweb.net. 5 A 65.254.254.139
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0