sangoma.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 sangoma.saix.net. NS
Answer
The response has no answer records.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0