mail2.crcltd.com.do has no NS records.
NS records for this zone are defined at crcltd.com.do.
NS records for this zone are defined at crcltd.com.do.
Question and response
Question
dig mail2.crcltd.com.do. NS
Answer
The response has no answer records.
Authority
crcltd.com.do. 3600 SOA pdns01.domaincontrol.com. dns.jomax.net. 2026022500 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0