vansmtp.sandals.com has no NS records.
NS records for this zone are defined at sandals.com.
NS records for this zone are defined at sandals.com.
Question and response
Question
dig vansmtp.sandals.com. NS
Answer
The response has no answer records.
Authority
sandals.com. 300 SOA a1-207.akam.net. hostmaster.sandals.com. 2024082596 3600 600 604800 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0