mailout03.ticketsnow.com has no NS records.
NS records for this zone are defined at ticketsnow.com.
NS records for this zone are defined at ticketsnow.com.
Question and response
Question
dig mailout03.ticketsnow.com. NS
Answer
The response has no answer records.
Authority
ticketsnow.com. 900 SOA ns-1714.awsdns-22.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0