(Reservation/Cancellation)
Vinay Marg, Chanakyapuri,
New Delhi - 110021
Email: reservations@csoi.in
Helpdesk No.: 011-2611090, 011-24195300
Mobile: +91 90138 88850
(Reservation/Cancellation)
F-116, Multi Storey Apartments, KG Marg,
New Delhi-110001
Email: receptionkgmarg@csoi.in
Helpdesk No.: 011-2338 3438 / 3572
Mobile: +91 93152 84347
Email:
admin@csoi.in
Contact No:
011-24195300
Email:
accounts@csoi.in
Contact No:
011-26111080
Email:
updation@csoi.in
Contact No:
011-24195301
Email:
library@csoi.in
Contact No:
011-24195300
Email:
it@csoi.in
Contact No:
011-24195300