ticket-mail.hostgator.com.br has no NS records.
NS records for this zone are defined at hostgator.com.br.
NS records for this zone are defined at hostgator.com.br.
Question and response
Question
dig ticket-mail.hostgator.com.br. NS
Answer
The response has no answer records.
Authority
hostgator.com.br. 1800 SOA ns1.hostgator.com.br. dns.cloudflare.com. 2398921956 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0