ns2.dendrite.com has no NS records.
NS records for this zone are defined at dendrite.com.
NS records for this zone are defined at dendrite.com.
Question and response
Question
dig ns2.dendrite.com. NS
Answer
The response has no answer records.
Authority
dendrite.com. 1200 SOA dnsus.imshealth.com. plydnsds.us.imshealth.com. 2016010402 86400 7200 1814400 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0