mx.historiadeltoreo.com has no NS records.
NS records for this zone are defined at historiadeltoreo.com.
NS records for this zone are defined at historiadeltoreo.com.
Question and response
Question
dig mx.historiadeltoreo.com. NS
Answer
The response has no answer records.
Authority
historiadeltoreo.com. 3600 SOA dns.historiadeltoreo.com. hostmaster.historiadeltoreo.com. 1293717934 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0