mail.njalla.net has no NS records.
NS records for this zone are defined at njalla.net.
NS records for this zone are defined at njalla.net.
Question and response
Question
dig mail.njalla.net. NS
Answer
The response has no answer records.
Authority
njalla.net. 3600 SOA 1-you.njalla.no. you.can-get-no.info. 2603131414 21600 7200 1814400 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0