ftp.rt-rk.uns.ac.rs IXFR zone transfer

Changes since SOA version

IXFR is a zone transfer request that returns changes since a specific SOA version. Enter the SOA version to request changes since then.

Not an apex domain The domain ftp.rt-rk.uns.ac.rs is not the root of its zone.
Instead, try zone transfer on rt-rk.ftn.uns.ac.rs .