mail.scetid.edu.do has no NS records.
NS records for this zone are defined at scetid.edu.do.
NS records for this zone are defined at scetid.edu.do.
Question and response
Question
dig mail.scetid.edu.do. NS
Answer
The response has no answer records.
Authority
scetid.edu.do. 3600 SOA ns1.contabo.net. hostmaster.contabo.de. 1773577258 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0