ns1.ansp.br has no MX records.
Question and response
Question
dig ns1.ansp.br. MX
Answer
The response has no answer records.
Authority
ansp.br. 10800 SOA ns1.ansp.br. hostmaster.ansp.br. 2026022301 43200 900 1209600 10800
Additional
. 0 OPT ; payload 1252, xrcode 0, version 0, flags 0