Apex domains cannot have CNAME records.
Question and response
Question
dig focolare.org. NS
Answer
focolare.org. 5 NS ns67.worldnic.com.
focolare.org. 5 NS ns68.worldnic.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0