| Eastern Region | ||
| Office | Phone No. | Address |
| Kolkata Regional Office |
033-22262784 |
5th Floor, Apeejay House Block 'C', 15 Park Street Kolkata-700016 |
| 033-22655086 | ||
| 033-22655095 | ||
| Fax - 033-22297992 | ||
| Guwahati Regional Office |
0361- 2636856 | Godrej Building |
| Fax - 0361- 2631770 | ||
| Bhubaneswar Area Office |
0674-2354832 | NH-5, Baramunda Bhubaneswar- 751003 |
| Fax - 0674- 2354812 | ||
| Jamshedpur Area Office |
0657- 6510393 | A Road, Telco Colony Jamshedpur-831004 |
| Fax - 0657- 2286197 | ||
| Patna Area Office |
0612- 6510332 | 3rd Floor 109, Adharshila Complex South Gandhi Maidan Patna - 800001 |
| Fax - 0612- 2323520 | ||