What's my caste?

Recently shifted to Hyderabad in a pg for govt exams & the fellow aspirants are enquiring themselves about their caste for reservation. I'm also seeing caste wars between tollywood fans (you know) but I don't know what caste I belong to. Can't ask my parents to embarass myself. I'm a reddy from anantapur. So, what caste I belong to? Reddy itself a caste or there are sub-castes too? Strictly for knowledge purpose only.