mail.itid.edu.do has no NS records.
NS records for this zone are defined at itid.edu.do.
NS records for this zone are defined at itid.edu.do.
Question and response
Question
dig mail.itid.edu.do. NS
Answer
The response has no answer records.
Authority
itid.edu.do. 1800 SOA meg.ns.cloudflare.com. dns.cloudflare.com. 2394270499 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0