spf.voipgateway.org has no NS records.
NS records for this zone are defined at voipgateway.org.
NS records for this zone are defined at voipgateway.org.
Question and response
Question
dig spf.voipgateway.org. NS
Answer
The response has no answer records.
Authority
voipgateway.org. 86400 SOA ns1.backbone.ch. hostmaster.backbone.ch. 2026030500 600 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0