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 2607-fa98-0052-0000-0000-0000-0000-0111.perfectip.net is not the root of its zone.
Instead, try zone transfer on perfectip.net .
Instead, try zone transfer on perfectip.net .