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 54j3652wfsru347fga64gepvoun4jt3bjlaslknuk27j74s5v3ga.mx-verification.google.com is not the root of its zone.
Instead, try zone transfer on google.com .
Instead, try zone transfer on google.com .