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 _b9e8f1af8e66c489fd25328fd4c2849b.ivcert.net is not the root of its zone.
Instead, try zone transfer on djqtsrsxkq.acm-validations.aws .
Instead, try zone transfer on djqtsrsxkq.acm-validations.aws .