spf2.dinahosting.com has no NS records.
NS records for this zone are defined at dinahosting.com.
NS records for this zone are defined at dinahosting.com.
Question and response
Question
dig spf2.dinahosting.com. NS
Answer
The response has no answer records.
Authority
dinahosting.com. 300 SOA ns.dinahosting.com. hostmaster.dinahosting.com. 2017021631 3600 120 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0