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 dynamic-077-010-142-011.77.10.pool.telefonica.de is not the root of its zone.
Instead, try zone transfer on 77.10.pool.telefonica.de .
Instead, try zone transfer on 77.10.pool.telefonica.de .