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 a4c6c51f8b10d0080.awsglobalaccelerator.com is not the root of its zone.
Instead, try zone transfer on awsglobalaccelerator.com .
Instead, try zone transfer on awsglobalaccelerator.com .