cvgmx2.convergys.com has no NS records.
NS records for this zone are defined at convergys.com.
NS records for this zone are defined at convergys.com.
Question and response
Question
dig cvgmx2.convergys.com. NS
Answer
The response has no answer records.
Authority
convergys.com. 900 SOA odcid7.concentrix.net. james\.stegemeyer.concentrix.com. 2014068917 10800 3600 604800 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0