mx.gigahost.no has no NS records.
NS records for this zone are defined at gigahost.no.
NS records for this zone are defined at gigahost.no.
Question and response
Question
dig mx.gigahost.no. NS
Answer
The response has no answer records.
Authority
gigahost.no. 1800 SOA margo.ns.cloudflare.com. dns.cloudflare.com. 2398166468 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0