mail.cempra.edu.do has no NS records.
NS records for this zone are defined at cempra.edu.do.
NS records for this zone are defined at cempra.edu.do.
Question and response
Question
dig mail.cempra.edu.do. NS
Answer
The response has no answer records.
Authority
cempra.edu.do. 10800 SOA ns2.cempra.edu.do. gregoryderosario.gmail.com. 2026030504 10800 3600 1209600 10800
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0