chpwd.puntonet.ec has no NS records.
NS records for this zone are defined at puntonet.ec.
NS records for this zone are defined at puntonet.ec.
Question and response
Question
dig chpwd.puntonet.ec. NS
Answer
The response has no answer records.
Authority
puntonet.ec. 3600 SOA dns2.punto.net.ec. hostmaster.punto.net.ec. 2016091550 3600 600 1209600 86400
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0