GST numbers formatted exactly as New Zealand's tax authority issues them, so they pass field-level format validation in your app. Synthetic — not registered to anyone.
08518437| Browser | sampuli.site — pick New Zealand, generate, export CSV/JSON |
| REST API | curl https://sampuli.site/api/v1/nz/tax?n=25 |
| npm | npx @sampuli/data nz.tax |
| Node | import { generate } from '@sampuli/data'; generate('nz.tax') |