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 a36394a38ef9a348814a757e826525e6.freshdesk.com is not the root of its zone.
Instead, try zone transfer on freshdesk.com .
Instead, try zone transfer on freshdesk.com .