Apex domains cannot have CNAME records.
Question and response
Question
dig accenture.com. NS
Answer
accenture.com. 5 NS cfans1002.accenture.com.
accenture.com. 5 NS cfans1001.accenture.com.
accenture.com. 5 NS apans3501.accenture.com.
accenture.com. 5 NS emens3501.accenture.com.
accenture.com. 5 NS amrns1501.accenture.com.
Authority
The response has no authority records.
Additional
amrns1501.accenture.com. 5 A 170.252.248.5
apans3501.accenture.com. 5 A 170.252.160.140
cfans1001.accenture.com. 5 A 162.159.8.127
cfans1002.accenture.com. 5 A 162.159.9.58
emens3501.accenture.com. 5 A 170.252.72.92
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0