| Post Office | Sadarpur B.o | 
| Division | Monghyr | 
| Region | Patna Hq | 
| Circle | Bihar | 
| Taluka | Asthama | 
| District | Nalanda | 
| State | Bihar | 
| Phone | NA | 
| Sub Office | Barbigha S.O | 
| Head Office | Munger H.O | 
| Pincode | 
811101 
 | 
| Post Office | Asthawan S.o | 
| Division | Nalanda | 
| Region | Patna Hq | 
| Circle | Bihar | 
| Taluka | Asthama | 
| District | Nalanda | 
| State | Bihar | 
| Phone | 06112-248221 | 
| Sub Office | NA | 
| Head Office | Biharsharif H.O | 
| Pincode | 
803107 
 |