nss2.codetel.net.do has no NS records.
NS records for this zone are defined at codetel.net.do.
NS records for this zone are defined at codetel.net.do.
Question and response
Question
dig nss2.codetel.net.do. NS
Answer
The response has no answer records.
Authority
codetel.net.do. 180 SOA ns1.claro.net.do. hostmaster.claro.net.do. 2017041241 21600 900 604800 180
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0