EXCH02-F5-NAT.its.fsu.edu 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 EXCH02-F5-NAT.its.fsu.edu is not the root of its zone.
Instead, try zone transfer on fsu.edu .