Not an apex domain
The domain 842749c36c776a79e8f4a120e447a4ab.7c0e1ef8d46aa9a8a1a35064f1dcde90.6603d2095942c.comodoca.com is not the root of its zone.
Instead, try zone transfer on comodoca.com .
Instead, try zone transfer on comodoca.com .