forum.cubers.net has no NS records.
NS records for this zone are defined at cubers.net.
NS records for this zone are defined at cubers.net.
Question and response
Question
dig forum.cubers.net. NS
Answer
The response has no answer records.
Authority
cubers.net. 1800 SOA curt.ns.cloudflare.com. dns.cloudflare.com. 2398722827 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0