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 86-42-155-186-dynamic.agg1.mvw.mvw-sla.eircom.net is not the root of its zone.
Instead, try zone transfer on mvw-sla.eircom.net .
Instead, try zone transfer on mvw-sla.eircom.net .