Apex domains cannot have CNAME records.
Question and response
Question
dig indexcodefive.com. NS
Answer
indexcodefive.com. 1 NS dns33562.dizinc.com.
indexcodefive.com. 1 NS dns33563.dizinc.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0