monsterindia.imastelabs.com has no NS records.
NS records for this zone are defined at imastelabs.com.
NS records for this zone are defined at imastelabs.com.
Question and response
Question
dig monsterindia.imastelabs.com. NS
Answer
The response has no answer records.
Authority
imastelabs.com. 3601 SOA dns1.registrar-servers.com. hostmaster.registrar-servers.com. 1773755215 43200 3600 604800 3601
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0