Lol blocked by open DNS

My dad has blocked lol by using a program, accessed through an internet browser. I believe that it blocks the game from accessing the internet by blocking it at the router. The error message I recieved when trying to open it was, "Rads error. Couldn't connect to the http server. Please check internet connection is enabled and that yourfirewall is not blocking access" how can I bypass this and start playing league again? Please ask is any extra info is needed
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