Government of Assam
Kar Bhawan, Ganeshguri
Guwahati, Assam, India
Pin: 781 006
Phone: +91-361-2232513, +91-361-2232670
Fax: +91-361-2232677
Helpdesk Number: +91-361-2232661, +91-361-2232664, +91-361-2232663, +91-361-2232619
E-MAIL: cot@assam.gov.in