mx14.mg.veeva.com has no NS records.
NS records for this zone are defined at veeva.com.
NS records for this zone are defined at veeva.com.
Question and response
Question
dig mx14.mg.veeva.com. NS
Answer
The response has no answer records.
Authority
veeva.com. 60 SOA ns-1114.awsdns-11.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0