Apex domains cannot have CNAME records.
Question and response
Question
dig sescomputers.com. NS
Answer
sescomputers.com. 5 NS dns01.rentedapps.com.
sescomputers.com. 5 NS dns05.rentedapps.com.
sescomputers.com. 5 NS dns04.rentedapps.com.
sescomputers.com. 5 NS dns03.rentedapps.com.
Authority
The response has no authority records.
Additional
dns01.rentedapps.com. 5 A 148.253.185.92
dns04.rentedapps.com. 5 A 83.98.61.133
dns05.rentedapps.com. 5 A 52.151.97.181
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0