ns1.ef.uns.ac.rs has no NS records.
NS records for this zone are defined at ef.uns.ac.rs.
NS records for this zone are defined at ef.uns.ac.rs.
Question and response
Question
dig ns1.ef.uns.ac.rs. NS
Answer
The response has no answer records.
Authority
ef.uns.ac.rs. 3600 SOA ns1.ef.uns.ac.rs. hostmaster.ef.uns.ac.rs. 2020092254 3600 3600 3600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0