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 ipagstaticip-4b5aa2bb-a0e9-f6e9-d848-f036cb197d6f.sdsl.bell.ca is not the root of its zone.
Instead, try zone transfer on sdsl.bell.ca .
Instead, try zone transfer on sdsl.bell.ca .