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 static-ip-adsl-190.186.93.7.cotas.com.bo is not the root of its zone.
Instead, try zone transfer on cotas.com.bo .
Instead, try zone transfer on cotas.com.bo .