mail.ebuero.net.do has no NS records.
NS records for this zone are defined at ebuero.net.do.
NS records for this zone are defined at ebuero.net.do.
Question and response
Question
dig mail.ebuero.net.do. NS
Answer
The response has no answer records.
Authority
ebuero.net.do. 86400 SOA ns1.antagus.de. root.ns1.antagus.de. 1657633585 10800 3600 604800 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0