Apex domains cannot have CNAME records.
Question and response
Question
dig saxobank.com. NS
Answer
saxobank.com. 3 NS edns4.ultradns.biz.
saxobank.com. 3 NS edns4.ultradns.net.
saxobank.com. 3 NS ns0106.secondary.cloudflare.com.
saxobank.com. 3 NS edns4.ultradns.org.
saxobank.com. 3 NS edns4.ultradns.com.
saxobank.com. 3 NS ns0219.secondary.cloudflare.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0