dlp.hcl.com has no NS records.
NS records for this zone are defined at hcl.com.
NS records for this zone are defined at hcl.com.
Question and response
Question
dig dlp.hcl.com. NS
Answer
The response has no answer records.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0