_spf.oxatis.com has no NS records.
NS records for this zone are defined at oxatis.com.
NS records for this zone are defined at oxatis.com.
Question and response
Question
dig _spf.oxatis.com. NS
Answer
The response has no answer records.
Authority
oxatis.com. 900 SOA etta.ns.cloudflare.com. dns.cloudflare.com. 2398207738 10000 2400 604800 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0