Asthawan is Taluka (Tehsil) in Nalanda district of Bihar state. Asthawan has 21 areas (postal offices).
| Pin code | Area | District | Taluka | Postal Status |
|---|---|---|---|---|
| 803107 | Abdachak PIN Code | Nalanda | Asthawan | Branch Office |
| 811101 | Amawan PIN Code | Nalanda | Asthawan | Branch Office |
| 803107 | Andi PIN Code | Nalanda | Asthawan | Branch Office |
| 811103 | Chakdin PIN Code | Nalanda | Asthawan | Branch Office |
| 803107 | Desna PIN Code | Nalanda | Asthawan | Branch Office |
| 811101 | Gilani PIN Code | Nalanda | Asthawan | Branch Office |
| 803107 | Itaura PIN Code | Nalanda | Asthawan | Branch Office |
| 803107 | Jamsari PIN Code | Nalanda | Asthawan | Branch Office |
| 803107 | Jana PIN Code | Nalanda | Asthawan | Branch Office |
| 803107 | Jear PIN Code | Nalanda | Asthawan | Branch Office |
| 803107 | Kaila PIN Code | Nalanda | Asthawan | Branch Office |
| 803107 | Konand PIN Code | Nalanda | Asthawan | Branch Office |
| 803107 | Kulti PIN Code | Nalanda | Asthawan | Branch Office |
| 803107 | Mafi PIN Code | Nalanda | Asthawan | Branch Office |
| 803107 | Malti PIN Code | Nalanda | Asthawan | Branch Office |
| 803107 | Mohammadpur PIN Code | Nalanda | Asthawan | Branch Office |
| 803107 | Nerut PIN Code | Nalanda | Asthawan | Branch Office |
| 803107 | Noawan PIN Code | Nalanda | Asthawan | Branch Office |
| 803107 | Onda PIN Code | Nalanda | Asthawan | Branch Office |
| 803107 | Sare PIN Code | Nalanda | Asthawan | Branch Office |
| 803107 | Waiyao PIN Code | Nalanda | Asthawan | Branch Office |