- Iii/H, 43/556, Nehru Nagar Iii, Rakesh Marg, Nehru Nagar, Ghaziabad - 201001
- A-20 & 21, Noida Ho, Noida - 201301
- www.bis.org.in
- G Block, Sector 63, Noida - 201307
- Mahilla College Road, Vivek Vihar, Delhi - 110095
- www.delhi.gov.in
- Sahibabad, Ghaziabad - 201010
- Gcs : 16, Cgh3 Gold Crest Tower, Aditya Mega City, Vaibhav Khand, Kala Pathar Marg, Indirapuram, Ghaziabad - 201014
- 162, Main Rd, Jamia Nagar, Delhi - 110025
- www.iosworld.org
- 101, Msx Tower-2, Alpha Commercial Belt, Alpha I, Greater, Alpha 1-Greater Noida, Noida - 201306
- 427/12, Jacubpura Railway Road, Gurgaon - 122001
- Sector 22, Noida, Delhi - 201301
- Shaheed Budh Ram Singh Marg, Mangal Apartment, Vasundhara Enclave, Delhi - 110096
- 405, Srs Towers, Faridabad Sector 31, Faridabad - 121003