AddressZen vs Addrex Address Validation API
AddressZen
addresszen.com
Addrex Address Validation API
addrex.devSide by side
| Figure | AddressZen | Addrex Address Validation API |
|---|---|---|
| Price from | Free | $39/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Plans published | 7 | 6 |
| Spec score · Address Verification Software | 9.3 (#2) | 8.2 (#8) |
| Address cleanup | Its address validation standardizes formatting, expands street and city abbreviations, adds missing ZIP+4, and corrects typos. | The service expands abbreviations, corrects typos, parses grid-style inputs, and can append ZIP+4 when a match is available. |
| Integrations | Listed integrations include Zapier, Adobe Commerce, WooCommerce, Contact Form 7, Gravity Forms, Gutenberg, Ninja Forms, FormAssembly, Formidable Forms, Formstack, JetFormBuilder and Elementor Pro. | The API documentation provides curl, Node.js, and Python request examples; the maker does not name specific third-party product integrations on the pages opened. |
| Security | AddressZen says its information security management system was recertified to ISO 27001 in 2025 and that its certification streak began in 2020. | The security page says data in transit uses TLS 1.2+, stored data uses AES-256 encryption, API keys are revocable and hashed, and PII is excluded from application logs by default. |
| Support | Support and live chat are advertised Monday through Friday, 9 AM to 5 PM Eastern Time. | The contact page offers technical support by email and says submitted contact forms receive a response within one business day. |
Plans
AddressZen
- FreeFree
- Free for 1 yearFree
- 1,400 verified addresses$49, paid once
- 5,000 verified addresses$149, paid once
- 14,000 verified addresses$349, paid once
- 55,000 verified addresses$1,000, paid once
- Address bundle$1,000, paid once
Addrex Address Validation API
- Free BetaFree
- Pay As You GoPriced on request
- Starter$39 a month
- Growth$79 a month
- Pro$149 a month
- Scale$299 a month
In their own words
AddressZen
AddressZen provides address lookup, autocomplete, validation, and verification for US and international addresses through an API, browser extension, and web interface. Its validation can normalize formatting, expand street and city abbreviations, add missing ZIP+4 details, and correct typos. It advertises coverage in 240+ countries and support for 60+ languages, with local address data that includes USPS sources for US verification and details such as apartment and suite numbers. Suggestions are real-time and matching accounts for typos. Developers can use JavaScript libraries, a React component, or a REST API; listed integrations include Zapier, Adobe Commerce, WooCommerce, and form tools. Batch validation and API key controls are available, including lookup limits, allowed URLs, and configurable transaction-log retention. The free plan includes 1,400 verified addresses for one year. The Address bundle is $1,000, paid once for 55,000 verified addresses. Billing is per verified address, with no setup fees or monthly commitment. The API reference limits each IP to 30 requests per second, with a separate autocomplete limit.
Addrex Address Validation API
Addrex Address Validation API validates and standardizes U.S. addresses, returning match codes, confidence scores, coordinates, and standardized fields. It supports API requests as well as spreadsheet cleanup: users can upload CSV or Excel files, process detected address columns, and download cleaned data with output fields appended. Cleanup can expand abbreviations, correct typos, parse grid-style inputs, and append ZIP+4 when a match is available. The API accepts a one-line address or structured address fields and returns JSON with validation status, confidence, standardized results, and changes. Free Beta allows 10,000 validation rows per day, requires email verification, and does not include autocomplete. The listed Free Beta plan has 10,000 address lookups per month; paid plans start at $39 a month. Autocomplete suggestions and details are restricted to paid plans. Real-time API address data is not retained beyond the request, while batch files default to seven days of retention and can be deleted sooner. Addrex does not claim USPS DPV or CASS certification.