Apex domains cannot have CNAME records.
Question and response
Question
dig cyconet.org. NS
Answer
cyconet.org. 5 NS ns2.cyconet.org.
cyconet.org. 5 NS ns5.tmt.de.
cyconet.org. 5 NS ns4.tmt.de.
cyconet.org. 5 NS ns1.cyconet.org.
cyconet.org. 5 NS ns0.tmt.de.
Authority
The response has no authority records.
Additional
ns0.tmt.de. 5 A 217.145.97.43
ns1.cyconet.org. 5 A 217.145.103.249
ns2.cyconet.org. 5 A 178.62.3.42
ns5.tmt.de. 5 A 88.209.63.250
ns0.tmt.de. 5 AAAA 2001:4dc8:100:3:0:0:97:43
ns1.cyconet.org. 5 AAAA 2001:4dc8:9000:1500:0:0:0:53
ns5.tmt.de. 5 AAAA 2001:4dc8:100:0:216:3eff:fec6:3095
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0