USPS Address Verification - International Address Validation

With our USPS address verification and international address validation service you can easily verify if any national or international postal address is valid and really exists. Whether you have an existing customer database to clean or want to stop bad addresses from getting on your list, we have exactly the right solution for you:

Validate Postal Address

Enter the address you want to validate (you can register for a free API key here).
Your API key (register for a free API Key):

Register for a free API key or upload a file to validate a list of addresses!

International Address Verification

Our global address validation service is available not only for the US and Canada - we offer complete, full-service validation for any international address:

  • International address verification
  • US Postal Service USPS/CASS certified
  • Address correction, standardization and re-formatting according to international standards

Address Validation Online API

The best way to capture good leads is of course to verify contact information right at the point of entry. That is why many businesses have decided to integrate our online address validation API directly into their sign-up forms. This allows website visitors or call center agents to correct errors in postal addresses instantly, with the benefit that only valid addresses are accepted and businesses can keep in touch with existing and prospective customers.

Our Address Validation Online API can be easily integrated in websites and applications. Code examples are available in several programming languages.

Batch Address List Verification

Our full service automated batch International Address List Validation & Cleaning service cleans CRM systems and customer databases from outdated or invalid addresses and helps our clients to save money and focus on real customers only.

Data Protection and Privacy

Byteplant is located in Germany and operates according to German and European data protection and privacy legislation which is one of the strictest in the world.

We are committed to protect your data and your privacy. Any data submitted to our validation service is processed and stored for no purpose other than validation. All data from API requests and batch/list processing will be automatically deleted within 14 days after the data has been processed.

Please see our Data Protection and Privacy Policy for details.