Apex domains cannot have CNAME records.
Question and response
Question
dig om-powered.net. NS
Answer
om-powered.net. 5 NS ns3.openminds.be.
om-powered.net. 5 NS ns3.om-powered.net.
om-powered.net. 5 NS ns2.openminds.be.
om-powered.net. 5 NS ns1.om-powered.net.
om-powered.net. 5 NS ns1.openminds.be.
Authority
The response has no authority records.
Additional
ns1.openminds.be. 5 A 195.47.215.14
ns2.openminds.be. 5 A 195.47.215.13
ns3.openminds.be. 5 A 195.47.215.56
ns3.om-powered.net. 5 A 195.47.215.56
ns1.openminds.be. 5 AAAA 2a02:d08:53:0:0:0:0:a1
ns2.openminds.be. 5 AAAA 2a02:d08:53:0:0:0:0:a2
ns3.openminds.be. 5 AAAA 2a02:d08:53:0:0:0:0:a3
ns3.om-powered.net. 5 AAAA 2a02:d08:53:0:0:0:0:a3
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0