Central Zone, Bhopal (States of MP, Chattisgarh) East Zone, Kolkata (States of WB, Assam, Tripura, Meghalaya, Manipur, Nagaland, Arunachal Pradesh, Sikkim, Mizoram East Central Zone, Patna (States of Bihar, Jharkhand, Orissa) North Zone, New Delhi (States of Delhi, Rajasthan, Punjab & Haryana, Shimla, J&K) North Central Zone, Kanpur (States of Uttar Pradesh, Uttarakhand) South Zone, Chennai (States of Tamil Nadu, Kerala ) South Central Zone, Hyderabad (States of Andhra Pradesh & Karnataka) Western Zone, Mumbai. (States of Maharashtra, Goa & Gujarat