spf_backup.sydantenn.net has no NS records.
NS records for this zone are defined at sydantenn.net.
NS records for this zone are defined at sydantenn.net.
Question and response
Question
dig spf_backup.sydantenn.net. NS
Answer
The response has no answer records.
Authority
sydantenn.net. 120 SOA ns1.teleservice.net. hostmaster.teleservice.net. 2025080602 10800 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0