_spf.myshoptet.com has no NS records.
NS records for this zone are defined at myshoptet.com.
NS records for this zone are defined at myshoptet.com.
Question and response
Question
dig _spf.myshoptet.com. NS
Answer
The response has no answer records.
Authority
myshoptet.com. 300 SOA ns1.myshoptet.com. hostmaster.myshoptet.com. 1772356111 1800 3600 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0