ev8DE3647E0A3C90C._domainKey.mailstd-04.zth.netdesignhost.com AXFR zone transfer

Not an apex domain The domain ev8DE3647E0A3C90C._domainKey.mailstd-04.zth.netdesignhost.com is not the root of its zone.
Instead, try zone transfer on netdesignhost.com .