www.solver.net.ua has no NS records.
NS records for this zone are defined at solver.net.ua.
NS records for this zone are defined at solver.net.ua.
Question and response
Question
dig www.solver.net.ua. 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