Apex domains cannot have CNAME records.
Question and response
Question
dig hosting5.serverhs.org. NS
Answer
hosting5.serverhs.org. 5 NS ns2.webhs.org.
hosting5.serverhs.org. 5 NS ns3.webhs.org.
hosting5.serverhs.org. 5 NS ns4.webhs.org.
hosting5.serverhs.org. 5 NS ns1.webhs.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0