Apex domains cannot have CNAME records.
Question and response
Question
dig euskoprint.com. NS
Answer
euskoprint.com. 5 NS ns1.euskoprint.com.
euskoprint.com. 5 NS ns2.euskoprint.com.
Authority
The response has no authority records.
Additional
ns1.euskoprint.com. 5 A 64.235.39.19
ns2.euskoprint.com. 5 A 38.126.208.95
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0