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 u6a749d5l0c8ktp7q4tdq8n5buebr95f.bibLIOpOlIs.infO is not the root of its zone.
Instead, try zone transfer on bibLIOpOlIs.infO .
Instead, try zone transfer on bibLIOpOlIs.infO .