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 _EF98B9F6F913FC17B4852172457D906F.netportal.lintelco.net is not the root of its zone.
Instead, try zone transfer on ssl.com .
Instead, try zone transfer on ssl.com .