dnsa01m-jca4.net.orange.es has no CNAME records.
Question and response
Question
dig dnsa01m-jca4.net.orange.es. NS
Answer
The response has no answer records.
Authority
net.orange.es. 2517 SOA ns1.orange.es. dnsmaster.es.orange-ftgroup.com. 498 86400 7200 2592000 172800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0