indom20.indomco.net has no NS records.
NS records for this zone are defined at indomco.net.
NS records for this zone are defined at indomco.net.
Question and response
Question
dig indom20.indomco.net. NS
Answer
The response has no answer records.
Authority
indomco.net. 7200 SOA udns1.cscdns.net. hostmaster.cscdns.net. 2017092122 86400 7200 3600000 7200
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0