Global Address Validation and Change of Address Service

Our real-time APIs ensure that your addresses are validated, correct and up-to-date. Allowing you to reduce waste, increase deliverability and improve customer satisfaction while maximizing postal discounts.

Test drive as many of our real-time services as you like.
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Each key includes 500 test transactions and our dedicated 24/7 customer support.

Address Validation

Our CASS-certified, address validation APIs provide coverage for over 240 countries and instantly correct, verify and append mailing addresses for increased deliverability, cost-saving postal discounts and improved customer satisfaction.


Our USPS-approved change-of-address API helps maintain up-to-date mailing addresses and meets the NCOALink requirements for postal discounts. The service returns change of addresses for both residential and businesses.
Select product:
United States

Address Detective

Address Detective uses fuzzy logic & additional data points to solve and fix fatal addressing errors that standard address validation cannot. This service includes our CASS-certified address validation service for US addresses and country append logic for international addresses.
Select product:
United States

Address Insight

Address Insight combines the power of three of our leading services, address validation, geocoding for longitude and latitude, and appending regional demographics, all with a single API call, providing a comprehensive customer profile.
Select product:
United States


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