Apex domains cannot have CNAME records.
Question and response
Question
dig qidc.telus.com. NS
Answer
qidc.telus.com. 5 NS dns01.lidc.telus.com.
qidc.telus.com. 5 NS dns02.lidc.telus.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0