mx20.mailspamprotection.com has no NS records.
NS records for this zone are defined at mailspamprotection.com.
NS records for this zone are defined at mailspamprotection.com.
Question and response
Question
dig mx20.mailspamprotection.com. NS
Answer
The response has no answer records.
Authority
mailspamprotection.com. 86400 SOA ns-cloud-c1.googledomains.com. msi200.ms200.com. 2021122801 86400 7200 3600000 86400
Additional
. 0 OPT ; payload 512, xrcode 0, version 0, flags 0