Apex domains cannot have CNAME records.
Question and response
Question
dig kenic.or.ke. NS
Answer
kenic.or.ke. 5 NS tessa.ns.cloudflare.com.
kenic.or.ke. 5 NS sage.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0