Cabinet Secretary
Rashtrapati Bhavan, New Delhi
Tel: 23016696/23011241

Secretary, Deptt. of Scientific
& Industrial Research,
 Technology Bhavan
Mehrauli Road, New Delhi
Tel: 23710472

Secretary (Personnel)
Department of Personnel &
Training, 
North Block,
New Delhi
Tel: 23094848

Secretary, Department of Women
& Child Development

Shastri Bhavan, 
New Delhi-110011
Tel: 23383586

Foreign Secretary
Ministry of External Affairs

South Block, New Delhi-110001
Tel: 23012318 / 2196

Chief Secretary, Govt of NCT, Delhi
5th Level, I. P. Estate
Delhi - 110001
Tel: 23392100 / 23392101

Home Secretary
Ministry of Home Affairs

North Block, New Delhi - 110001
Tel: 23093003

Secretary,
Department of Posts

Dak Bhavan, New Delhi-110001
Tel: 23096060

Chairman, Railway Board
Rail Bhawan, New Delhi-110001
Tel: 23384010

Dy C&AG,
O/o Comptroller & Auditor Gen of India 

Pocket 9, Deen Dayal Upadhayaya Marg,
New Delhi-110124  Tel: 011-23234820

Secretary, Deptt of Expenditure
North Block, New Delhi-110001
Tel: 23092663

Chairman, Central Board of
Excise & Customs,
New Delhi-110001
Tel: 23092849

Chairman, Telecom Commission
Sanchar Bhavan,
New Delhi-11001
Tel: 23719898

Chairman, Central Board of
Direct Taxes, North Block

New Delhi-11000
Tel: 23092648

Secretary, Ministry of Defence
South Block, New Delhi-110001
Tel: 23012380

Director General, Health Services,
Nirman Bhavan

New Delhi   Tel: 23019063

Secretary, Ministry of
Urban Development

Nirman Bhawan, New Delhi-110001
Tel: 23019377

D.G. Forest & Special Secretary
CGO Complex, 
New Delhi-110003
Tel: 24361509

Secretary, Defence Research
& Development

South Block, New Delhi-110001
Tel: 23011519

Director, IB, Ministry of Home Affairs
New Delhi
Tel: 23092357