eu-l-ppu-smtprelay-01.ionline-aws.net IXFR zone transfer

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 eu-l-ppu-smtprelay-01.ionline-aws.net is not the root of its zone.
Instead, try zone transfer on ionline-aws.net .