Skip to content
SPECIFICTION
Get listed

AddressZen

addresszen.com

Free plan WebiOSAndroidAPIBrowser extension
Visit addresszen.com
Spec score 9.3 #2 of 30 in Address Verification Software

What it is

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.

Spec sheet

What it does
AddressZen provides address autocomplete, verification, correction and standardization for US and international addresses.Read 14 Oct 2026 · addresszen.com
Product
AddressZen provides US and international address lookup, autocomplete, validation, and verification.Read 7 Oct 2026 · addresszen.com
Integrations
Listed integrations include Zapier, Adobe Commerce, WooCommerce, Contact Form 7, Gravity Forms, Gutenberg, Ninja Forms, FormAssembly, Formidable Forms, Formstack, JetFormBuilder and Elementor Pro.Read 14 Oct 2026 · addresszen.com
Security
AddressZen says its information security management system was recertified to ISO 27001 in 2025 and that its certification streak began in 2020.Read 7 Oct 2026 · addresszen.com
Privacy
The maker's privacy policy says TLS is used for data in transit, passwords are salted and hashed, and payment details are not stored on its servers.Read 7 Oct 2026 · terms.addresszen.com
Support
Support and live chat are advertised Monday through Friday, 9 AM to 5 PM Eastern Time.Read 14 Oct 2026 · addresszen.com
License
The OpenAPI reference identifies the API as copyright IDDQD Limited with all rights reserved, indicating proprietary software.Read 14 Oct 2026 · openapi.addresszen.com
Founded
2012Read 28 Sep 2026 · addresszen.com
Address cleanup
Its address validation standardizes formatting, expands street and city abbreviations, adds missing ZIP+4, and corrects typos.Read 7 Oct 2026 · addresszen.com
Address database
AddressZen says its database contains more than 750 million addresses.Read 14 Oct 2026 · addresszen.com
API authentication
API requests use bearer API keys, while management and licensee operations use separate credentials.Read 14 Oct 2026 · openapi.addresszen.com
API functions
The API supports two-step address suggestion and retrieval, US address verification, key management, email validation and phone validation.Read 14 Oct 2026 · docs.addresszen.com
API key controls
API keys can be restricted with daily and individual lookup limits, allowed URLs, and configurable transaction-log retention.Read 7 Oct 2026 · docs.addresszen.com
API limits
The documented default limit is 30 requests per second per IP, with an additional autocomplete limit.Read 14 Oct 2026 · openapi.addresszen.com
API versioning
The API uses a /v1/ URL version and promises backward-compatible additions within that version.Read 14 Oct 2026 · openapi.addresszen.com
Automatic top-up
Paid balances automatically top up when remaining credit reaches 10 percent of the plan total, with an email notification.Read 14 Oct 2026 · addresszen.com
CASS verification
Its US verification uses USPS CASS data to standardize formatting, expand abbreviations, add ZIP+4 and correct typos.Read 14 Oct 2026 · addresszen.com
Changelog: TypeScript SDK
The changelog records release of the TypeScript SDK on 28 September 2026.Read 14 Oct 2026 · addresszen.com
CLI
The official azn command-line tool requires Node.js 22+ and handles keys, address resolving, US verification and email or phone validation.Read 14 Oct 2026 · docs.addresszen.com
Company legal identity
IDDQD Limited is a UK private company incorporated on 21 November 2012 with a registered office at 207 Regent Street, London.Read 14 Oct 2026 · find-and-update.company-information.service.gov.uk
Company size
LinkedIn lists AddressZen as privately held with 2–10 employees.Read 14 Oct 2026 · linkedin.com
Coverage
The service advertises coverage of more than 240 countries and 60 languages.Read 14 Oct 2026 · addresszen.com
Dashboard
A web dashboard provides reports, API-key management and usage tracking.Read 14 Oct 2026 · addresszen.com
Data source
AddressZen says it uses authoritative local address sources, including USPS data for US address verification.Read 7 Oct 2026 · addresszen.com
Developer access
The maker offers JavaScript libraries, a React component, and a REST API for integration.Read 7 Oct 2026 · addresszen.com
Documentation
Documentation includes integration guides, API reference, SDK instructions, key management, testing, data coverage and changelog material.Read 14 Oct 2026 · docs.addresszen.com
Features
The product offers typo-aware matching, real-time suggestions, language handling, and localized address data such as US apartment and suite numbers.Read 7 Oct 2026 · addresszen.com
Fuzzy matching
The feature set includes fuzzy matching that compensates for user typing errors.Read 14 Oct 2026 · addresszen.com
GetApp platform listing
GetApp lists web, Android and iPhone/iPad deployment, plus email, phone, chat and knowledge-base support options.Read 14 Oct 2026 · getapp.com
Limit: expiring credits
Terms state that purchased lookups expire after at most 12 months and unused lookups are not refunded.Read 14 Oct 2026 · terms.addresszen.com
Limit: support and freshness
Two G2 reviewers complain that customer support is weak and newly constructed buildings appear too slowly.Read 14 Oct 2026 · g2.com
Limit: support liability
The terms disclaim liability for support or availability problems unless a customer buys the Premium Service SLA.Read 14 Oct 2026 · terms.addresszen.com
Notable limit
The API reference states that each IP address is rate limited to 30 requests per second and that autocomplete has an additional rate limit.Read 7 Oct 2026 · docs.addresszen.com
Notable news
IDDQD reported on 4 March 2026 that its ISO/IEC 27001 surveillance audit closed with no major non-conformities.Read 14 Oct 2026 · iddqd.org
Performance claim
AddressZen reports suggestions can appear in as little as 45 milliseconds and that it handles over one billion lookups monthly.Read 14 Oct 2026 · addresszen.com
Praise: accuracy and usability
G2 reviewers repeatedly praise precise address resolution, an easy interface and straightforward implementation.Read 14 Oct 2026 · g2.com
Praise: API documentation
A G2 enterprise reviewer specifically praises the completeness of the API documentation and ease of integration.Read 14 Oct 2026 · g2.com
Rating on Capterra
0.0 out of 5 from 0 reviewsRead 14 Oct 2026 · capterra.com
Rating on G2
3.3 out of 5 from 3 reviewsRead 14 Oct 2026 · g2.com
Rating on GetApp
0 out of 5 from 0 reviewsRead 14 Oct 2026 · getapp.com
React support
AddressZen publishes an @addresszen/react package requiring React 18 or 19; its components are client-only and need CSS.Read 14 Oct 2026 · docs.addresszen.com
Security certification
AddressZen states that its information-security management system is ISO 27001 certified, with coverage for privacy, integrity, continuity and access controls.Read 14 Oct 2026 · addresszen.com
Self-hosting
The published architecture describes hosted API endpoints and libraries; no self-hosting package is documented.Read 14 Oct 2026 · openapi.addresszen.com
TypeScript SDK
The @addresszen/sdk package supports browsers and Node.js 22+, has generated types, no runtime dependencies and a roughly 4.4 kB client plus findAddress bundle.Read 14 Oct 2026 · docs.addresszen.com
Usage terms
The pricing page says customers are billed per verified address rather than per keystroke, with no setup fees or monthly commitment.Read 7 Oct 2026 · addresszen.com
WordPress plugin
The WooCommerce plugin supports US and more than 240 international countries, typo correction, accessibility and manual fallback when an API key fails.Read 14 Oct 2026 · wordpress.org
WordPress plugin rating
The WordPress directory shows no submitted reviews for the AddressZen plugin.Read 14 Oct 2026 · wordpress.org

Plans and prices

Free Free Free for 1 year 1,400 verified addresses · US and international addresses · unlimited keystrokes Read 14 Oct 2026 · addresszen.com
Free for 1 year Free 1,400 verified addresses Read 7 Oct 2026 · addresszen.com
1,400 verified addresses $49, paid once $49 US and international addresses · unlimited keystrokes · optional renewal · account and technical support Read 14 Oct 2026 · addresszen.com
5,000 verified addresses $149, paid once $149 US and international addresses · unlimited keystrokes · optional renewal · account and technical support Read 14 Oct 2026 · addresszen.com
14,000 verified addresses $349, paid once $349 US and international addresses · unlimited keystrokes · optional renewal · account and technical support Read 14 Oct 2026 · addresszen.com
55,000 verified addresses $1,000, paid once $1000 US and international addresses · unlimited keystrokes · optional renewal · account and technical support Read 14 Oct 2026 · addresszen.com
Address bundle $1,000, paid once Optional renewal 55,000 verified addresses · US and international addresses · Unlimited keystrokes · Account and technical support Read 7 Oct 2026 · addresszen.com

Every AddressZen plan and price →

Strong points and limits

Strong points

  • Coverage advertised in 240+ countries and 60+ languages
  • Corrects typos and standardizes address formatting
  • Offers batch validation and API key controls
  • Free plan includes 1,400 verified addresses for one year

Limits

  • Each IP is limited to 30 requests per second
  • Autocomplete has an additional rate limit
  • Address bundle costs $1,000, paid once

Who it suits

AddressZen suits teams that need to validate or autocomplete US and international addresses in forms or applications. Its API, browser extension, web interface, integrations, and batch validation accommodate different workflows.

Verdict

AddressZen combines address cleanup, global coverage, and multiple integration routes. Check the API and autocomplete rate limits against expected request volume before choosing it.

Where Specifiction places it

Alternatives to AddressZenAll alternatives →