Khammam STD Code
| City | Khammam |
| STD Code | 08742 |
| District | Khammam |
| State | Andhra Pradesh |
STD Code of Khammam is 08742. This city is located in Khammam district of Andhra Pradesh state in India. To call landline phones of Khammam, you must add 08742 before the number.