Source notes, limitations, and local processing policy.
UDataX reads generated public-source snapshots and deploy-time postal shards. Each source lists attribution, coverage notes, refresh date, and limitations before broad release.
| GeoNames US postal codes | Global shards generated during deploy | CC BY attribution; as-is | https://www.geonames.org/export/ |
| REST Countries | 250 | Public API snapshot; verify upstream terms before broad redistribution | https://restcountries.com/ |
| Nager.Date public holidays | 8,546 | Public API snapshot; verify upstream terms before broad redistribution | https://date.nager.at/api |
Production source checklist
- 1License
Confirm redistribution and commercial-use terms before indexing broad data pages. - 2Update cadence
Publish snapshot date, refresh plan, and known limitations. - 3Quality notes
Disclose unmatched rows, confidence fields, and non-official preview data.
Current release boundary
Static reference snapshots were generated at 5/29/2026, 11:25:42 AM. Postal shard manifests are regenerated during Cloudflare builds. Postal maps use centroids, not official boundaries. CSV files are processed in your browser unless a future feature explicitly asks for server processing.
Default privacy language
Files are processed in your browser by default. UDataX does not upload your data unless a feature clearly asks for server processing.