Data you can trust.
The fastest and most accurate validation APIs for 18 European countries. Reduce returns, improve conversion and prevent errors - live in minutes.
Four APIs. One platform.
Integrate address, email and phone validation via a single REST API. Flexible, fast and documented.
Address Validation API
Validate and autocomplete addresses in real-time. Postcode lookup for 18 European countries. Reduce returns and improve delivery reliability.
Email Validation API
Check syntax, domain and deliverability. Detect disposable addresses and non-existent mailboxes before they pollute your list.
Phone Validation API
Validate and normalize phone numbers internationally. Detect line type, operators and format to E.164 standard.
License Plate Validation API
Validate Dutch license plates and retrieve vehicle information. Brand, model, color and build year available instantly.
// ApiCheck - Adres Validatie // composer require api-check/php-client use ApiCheck\ApiClient; $client = new ApiClient(); $client->setApiKey('uw-api-key'); $result = $client->lookup('1234AB', '10'); echo $result['street']; // "Dreef" echo $result['city']; // "Haarlem"
Live in 15 minutes.
Detailed documentation, ready-to-use SDKs and plugins for the most popular platforms. Integrate into your stack with minimal effort.
From registration to live validation.
Get operational in four steps - in less than 15 minutes.
Create account
Register for free. No credit card, no obligations. Ready in 60 seconds.
Generate API key
Your unique key is ready immediately in the dashboard. Secure and personal.
Integrate & test
Plugin, SDK or direct REST connection. Documentation and integration help included.
Monitor & scale
Real-time statistics in the dashboard. Easily upgrade as your usage grows.
Transparent. Fair. Scalable.
Pay only for what you use. No hidden costs, monthly cancellable.
- 200 one-time credits
- No credit card required
- Free plugins
- Integration help
- 250 credits/month
- Standard support
- Free plugins
- Integration help
- 1,000 credits/month
- Standard support
- Free plugins
- Integration help
- 5,000 credits/month
- Priority support
- Free plugins
- Personal help
- 10,000 credits/month
- Priority support
- Free plugins
- Dedicated help
Extra usage: €0.01 per credit · or buy extra credits from · All prices excl. 21% VAT · Monthly cancellable
Connect to your existing stack
Works with any language via REST API. Read the documentation →
Want to learn more? View the full overview of all integrations including installation documentation and live demos.
View all integrations & demosBuilt on trust.
European infrastructure, GDPR principles and transparency as foundation.
Made in the EU
ApiCheck is fully developed, managed and hosted within the European Union, with EU-hosted infrastructure and Dutch registers. Your data is never processed outside the EU - built around GDPR principles and the strictest European privacy standards.
GDPR-ready
Your customer data is exclusively processed within the EU. No data storage, no profiles, no advertising purposes.
99.99% Uptime SLA
Guaranteed availability with SLA. Real-time status monitoring and proactive failure notifications.
Official data sources
Address data from official Dutch and Belgian government databases. Always current, always reliable.
What customers say.
Very happy with this service! Very nice that the system also checks Belgian addresses. So far very satisfied!
Works excellently and is definitely not expensive. A great development that we will never step away from.
Thanks to address validation, we know for sure that every address is entered correctly. Easy to install. Very satisfied!
Ready to get started?
Start free with 200 credits - no credit card required.
Validate your first data immediately. No obligations.