mx1.providesupport.com has no NS records.
NS records for this zone are defined at providesupport.com.
NS records for this zone are defined at providesupport.com.
Question and response
Question
dig mx1.providesupport.com. NS
Answer
The response has no answer records.
Authority
providesupport.com. 180 SOA ns-1327.awsdns-37.org. hostmaster.providesupport.com. 2026031003 1200 120 1209600 180
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0