spf.host-h.net has no NS records.
NS records for this zone are defined at host-h.net.
NS records for this zone are defined at host-h.net.
Question and response
Question
dig spf.host-h.net. NS
Answer
The response has no answer records.
Authority
host-h.net. 7200 SOA ns1.host-h.net. postmaster.your-server.co.za. 2026022402 86400 1800 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0