mx.asistenciatecnicabm.com has no NS records.
NS records for this zone are defined at asistenciatecnicabm.com.
NS records for this zone are defined at asistenciatecnicabm.com.
Question and response
Question
dig mx.asistenciatecnicabm.com. NS
Answer
The response has no answer records.
Authority
asistenciatecnicabm.com. 3600 SOA dns.asistenciatecnicabm.com. hostmaster.asistenciatecnicabm.com. 1227523090 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0