| Ward/Circle/Range/ Commissioner | Remark | Area Code | AO Type | Range Code | AO Number |
| City Area / Jurisdiction | |||||
| ACIT CIRCLE, DIMAPUR | Assessee having returned income/loss more than 10 lakh and all AOP and BOI cases within the territory of Sivasagar & Karbi Anglong District in the state of Assam and state of Nagaland | SHL | C | 8 | 1 |
| ITO WARD -1, DIMAPUR | Assessee having returned income/loss upto 10 lakh - name start from A to K - within the territory of state of Nagaland and district of Karbi Anglong in the state of Assam | SHL | W | 8 | 11 |
| ITO WARD -2, DIMAPUR | Assessee having returned income/loss upto 10 lakh - name start from L to Z - within the territory of state of Nagaland. - All salary cases of district of Karbi Anglong in the state of Assam | SHL | W | 8 | 12 |