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 67ddf86fde6df8a1da723cdf1cef3e7d.52c4964ad9bd6aaeee81294726484eef.f5e3591a5f79b93.comodoca.com is not the root of its zone.
Instead, try zone transfer on comodoca.com .
Instead, try zone transfer on comodoca.com .