ldn-srv4.filteredmx.net has no NS records.
NS records for this zone are defined at filteredmx.net.
NS records for this zone are defined at filteredmx.net.
Question and response
Question
dig ldn-srv4.filteredmx.net. NS
Answer
The response has no answer records.
Authority
filteredmx.net. 3600 SOA ns1.kgix.com. sysadmin.filteredmx.com. 2020062500 1200 1800 2419200 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0