spf.dns-servicios.com has no CNAME records.
Question and response
Question
dig spf.dns-servicios.com. NS
Answer
The response has no answer records.
Authority
dns-servicios.com. 10800 SOA ns.hostalia.com. syadmin.hostalia.com. 1772608196 28800 7200 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0