Now that Bitcoin has been split into Bitcoin core and Bitcoin Cash (BCC), you would want to know whether the amounts you have in your Bitcoin core addresses are also there on the Bitcoin Cash addresses. Fortunately, there is a very easy way to do so.
Just go to https://blockchair.com/ and paste the address you want to see on the search box there. Then when you click the search button, it will show the amounts in that address for both Bitcoin Core and Bitcoin Cash.