mail.ised.edu.do has no NS records.
NS records for this zone are defined at ised.edu.do.
NS records for this zone are defined at ised.edu.do.
Question and response
Question
dig mail.ised.edu.do. NS
Answer
The response has no answer records.
Authority
ised.edu.do. 1800 SOA edna.ns.cloudflare.com. dns.cloudflare.com. 2393215060 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0