spf.creamailer.com has no NS records.
NS records for this zone are defined at creamailer.com.
NS records for this zone are defined at creamailer.com.
Question and response
Question
dig spf.creamailer.com. NS
Answer
The response has no answer records.
Authority
creamailer.com. 300 SOA ns1.name.com. hostmaster.nsone.net. 1638504434 7200 3600 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0