bhs1-load.mav.com.br has no NS records.
NS records for this zone are defined at mav.com.br.
NS records for this zone are defined at mav.com.br.
Question and response
Question
dig bhs1-load.mav.com.br. NS
Answer
The response has no answer records.
Authority
mav.com.br. 1200 SOA ns1.supramail.com.br. suporte.supramail.com.br. 2016032318 10800 3600 604800 3600
Additional
. 0 OPT ; payload 2800, xrcode 0, version 0, flags 0