mail.aprende.edu.do has no NS records.
NS records for this zone are defined at aprende.edu.do.
NS records for this zone are defined at aprende.edu.do.
Question and response
Question
dig mail.aprende.edu.do. NS
Answer
The response has no answer records.
Authority
aprende.edu.do. 1800 SOA liv.ns.cloudflare.com. dns.cloudflare.com. 2397644061 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0