• 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