Apex domains cannot have CNAME records.
Question and response
Question
dig fxrm.com. NS
Answer
fxrm.com. 5 NS ns1.fxrm.com.
fxrm.com. 5 NS ns2.fxrm.uk.
fxrm.com. 5 NS ns2.fxrm.com.
fxrm.com. 5 NS ns0.fxrm.com.
Authority
The response has no authority records.
Additional
ns0.fxrm.com. 5 A 193.195.141.53
ns1.fxrm.com. 5 A 193.195.141.153
ns2.fxrm.com. 5 A 194.113.64.22
ns0.fxrm.com. 5 AAAA 2a01:2c0:a:540:40:0:0:53
ns1.fxrm.com. 5 AAAA 2a01:2c0:a:540:40:0:0:153
ns2.fxrm.com. 5 AAAA 2a02:4780:10:ed24:0:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0