_spfmb.donovandata.com has no NS records.
NS records for this zone are defined at donovandata.com.
NS records for this zone are defined at donovandata.com.
Question and response
Question
dig _spfmb.donovandata.com. NS
Answer
The response has no answer records.
Authority
donovandata.com. 3600 SOA dns01.donovandata.com. domainadmin.mediaocean.com. 2025031301 900 60 604800 3600
Additional
. 0 OPT ; payload 1500, xrcode 0, version 0, flags 0