webmail.ups.sci.uz has no NS records.
NS records for this zone are defined at ups.sci.uz.
NS records for this zone are defined at ups.sci.uz.
Question and response
Question
dig webmail.ups.sci.uz. NS
Answer
The response has no answer records.
Authority
ups.sci.uz. 10800 SOA ns01.uzsci.net. davronaka.yahoo.com. 1770677039 10800 3600 604800 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0