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 3a4g128g9ek8m3fs9ud1n970a28t7rui.storagefactory.io is not the root of its zone.
Instead, try zone transfer on storagefactory.io .
Instead, try zone transfer on storagefactory.io .