spf.greenradar.com has no NS records.
NS records for this zone are defined at greenradar.com.
NS records for this zone are defined at greenradar.com.
Question and response
Question
dig spf.greenradar.com. NS
Answer
The response has no answer records.
Authority
greenradar.com. 600 SOA pdns07.domaincontrol.com. dns.jomax.net. 2026022700 28800 7200 604800 600
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0