Telecom Regulatory Authority of India (TRAI) The company profile, contact number, contact address and services offered are given below. Telecom Regulatory Authority of India (TRAI) Head Office , Company statement, financial statement Address of Telecom Regulatory Authority of India (TRAI) Head Office: Mahanagar Dwarshankar Bhavan (next to Zakir Hussain College) Jawaharlal Nehru Marg Old Minto Road) New Delhi: 110002 Delhi, India. Telecom Regulatory Authority of India (TRAI) Phone Number: (11) 2322330 23 23213223 Website of Telecom Regulatory Authority of India (TRAI) : www.trai.gov.in Telecom Regulatory Authority of India (TRAI) Financial Statement : Number of employees - 251-500 Business in crores - 100-250 crores Sector- Government Sector