corp-mta2.ipreo.com has no NS records.
NS records for this zone are defined at ipreo.com.
NS records for this zone are defined at ipreo.com.
Question and response
Question
dig corp-mta2.ipreo.com. NS
Answer
The response has no answer records.
Authority
ipreo.com. 900 SOA ns1.ihsmarkit.com. hostmaster.ihsmarkit.com. 2019121242 900 3600 2419200 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0