In the US, continuation applications of a given application can be checked for in the "Continuity Data" tab in PAIR.
In the case of EPO, divisionals (the analogue of continuations) may be less common due to EPO renewal fees due from the parent's EP filing date (e.g. see here).
I have not been able to find any examples of EP divisionals. How can I determine whether one has been filed for a given application (e.g. via EP register or GPI)? Is it possible to provide an example EP divisional?