Biswan STD Code
| City | Biswan |
| STD Code | 05863 |
| District | Sitapur |
| State | Uttar Pradesh - East |
STD Code of Biswan is 05863. This city is located in Sitapur district of Uttar Pradesh - East state in India. To call landline phones of Biswan, you must add 05863 before the number.