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 piec27jugnbmk9vvd9p4frnsh4pb0v6t.webexchange.nu is not the root of its zone.
Instead, try zone transfer on webexchange.nu .
Instead, try zone transfer on webexchange.nu .