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 1it2ga40emf19aiam7tq3utrv2issj09.webexchange.nu is not the root of its zone.
Instead, try zone transfer on webexchange.nu .
Instead, try zone transfer on webexchange.nu .