ns2.hadcloudservers.com.br has no NS records.
NS records for this zone are defined at hadcloudservers.com.br.
NS records for this zone are defined at hadcloudservers.com.br.
Question and response
Question
dig ns2.hadcloudservers.com.br. NS
Answer
The response has no answer records.
Authority
hadcloudservers.com.br. 900 SOA cloud-dns01.hadcloud.srv.br. noc.hadcloud.com.br. 2021683507 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0