mxscan.saix.net has no NS records.
NS records for this zone are defined at saix.net.
NS records for this zone are defined at saix.net.
Question and response
Question
dig mxscan.saix.net. NS
Answer
The response has no answer records.
Authority
saix.net. 3600 SOA igubu.saix.net. dnsadmin.saix.net. 2026013923 10800 3600 1209600 3600
Additional
. 0 OPT ; payload 4000, xrcode 0, version 0, flags 0