Postal codes (postcode / ZIP) in Japan's real format — the correct length and layout for address forms and field-level validation. In a full record the postcode matches the one inside the address. Entirely synthetic.
493-9363| Browser | sampuli.site — pick Japan, generate, export CSV/JSON |
| REST API | curl https://sampuli.site/api/v1/jp/postcode?n=25 |
| npm | npx @sampuli/data jp.postcode |
| Node | import { generate } from '@sampuli/data'; generate('jp.postcode') |