Apex domains cannot have CNAME records.
Question and response
Question
dig xifos.net. NS
Answer
xifos.net. 5 NS ns3.xifos.net.
xifos.net. 5 NS ns2.amatisnetworks.com.
xifos.net. 5 NS ns1.xifos.net.
Authority
The response has no authority records.
Additional
ns3.xifos.net. 5 A 77.246.22.99
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0