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PIN code 791104 is the Postal Index Number assigned to the Ayeng B.O post office in East Siang district, Arunachal Pradesh. It is administered under the North Eastern Circle Postal Circle. The code falls under Zone 7 of India's postal network, covering the Eastern India region.
India's PIN code system — standing for Postal Index Number — was introduced on 15 August 1972 to streamline postal sorting and delivery across the country. Each 6-digit code is structured systematically: the first digit (7) identifies the broad postal zone; the first three digits (791) pinpoint the postal district or sorting hub; and the last three digits (104) identify the specific delivery post office.
When addressing letters, parcels, or courier shipments to Ayeng B.O in East Siang, Arunachal Pradesh, always include PIN – 791104 in the postal address to ensure accurate sorting and on-time delivery by India Post.
| PIN Code | 791104 |
| Zone | Zone 7 · Eastern India |
| Sort District | 791 |
| Delivery Code | 104 |
| Postal Circle | North Eastern Circle |
| State / UT | Arunachal Pradesh |
Browse PIN codes for other post offices in East Siang, Arunachal Pradesh