dns2.intodomain.net has no CNAME records.
Question and response
Question
dig dns2.intodomain.net. NS
Answer
The response has no answer records.
Authority
intodomain.net. 80 SOA ns10.hostdominicano.com. dominio.grupo.host. 2025050704 7200 7200 172800 38400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0