dns2.spainbs.net has no CNAME records.
Question and response
Question
dig dns2.spainbs.net. NS
Answer
The response has no answer records.
Authority
spainbs.net. 3600 SOA dns1.spainbs.net. info.spainbs.com. 2025072102 3600 1800 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0