Apex domains cannot have CNAME records.
Question and response
Question
dig safaricombusiness.co.ke. NS
Answer
safaricombusiness.co.ke. 5 NS dns2.safaricombusiness.co.ke.
safaricombusiness.co.ke. 5 NS dns1.safaricombusiness.co.ke.
Authority
The response has no authority records.
Additional
dns1.safaricombusiness.co.ke. 5 A 41.203.208.19
dns2.safaricombusiness.co.ke. 5 A 41.203.208.18
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0