msa.cobemail.com.br has no NS records.
NS records for this zone are defined at cobemail.com.br.
NS records for this zone are defined at cobemail.com.br.
Question and response
Question
dig msa.cobemail.com.br. NS
Answer
The response has no answer records.
Authority
cobemail.com.br. 1800 SOA kim.ns.cloudflare.com. dns.cloudflare.com. 2397879555 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0