Side by side
AddressZen vs Addrex Address Validation API
Both stand on address verification software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan AndroidAPIExtension+2
AddressZen combines address entry tools with validation and international coverage. Check the per-IP and autocomplete rate limits when planning API usage.
Visit AddressZen
Free plan APIWeb
Addrex offers both batch spreadsheet cleanup and API-based validation for U.S. addresses. Consider the lookup allowances, autocomplete restrictions, and stated certification limits before selecting a plan.
Visit Addrex Address Validation APIThe facts
| AddressZen | Addrex Address Validation API | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | No | Not published |
| Runs on | Android, API, Extension, iPhone, Web | API, Web |
| Lowest paid plan | 1,400 verified addresses: $49, paid once | Starter: $39 a month |
| Plans published | 7 | 6 |
| Maker | Not published | Not published |
| Website | addresszen.com | addrex.dev |
| On address verification software | #2 of 30 | #6 of 30 |
AddressZen: what it does well
- Advertised coverage spans 240+ countries.
- Supports 60+ languages.
- Validation can correct typos and add ZIP+4.
- Batch validation is available.
- API keys can be restricted by allowed URLs.
What to know first
- Each IP is limited to 30 requests per second.
- Autocomplete has an additional rate limit.
- Live support is limited to weekdays, 9 AM–5 PM EST.
Addrex Address Validation API: what it does well
- Accepts CSV and Excel spreadsheet uploads.
- Can correct typos and expand abbreviations.
- API returns JSON with validation details and changes.
- Real-time API data is not retained beyond the request.
What to know first
- Autocomplete is excluded from Free Beta.
- Free Beta requires email verification.
- Addrex does not claim USPS DPV or CASS certification.
- Starter costs $39 a month.
Alternatives to AddressZen Alternatives to Addrex Address Validation API The whole list