About Addrex
We're building the easiest way to clean, verify, and fix U.S. address data. Whether you upload a spreadsheet or connect an app, Addrex checks every address, fixes what's wrong, and shows you exactly what changed.
Why we built Addrex
Address data is foundational. It powers shipping, onboarding, insurance underwriting, territory mapping, and analytics. Yet most address validation tools are opaque — they return a pass/fail with no explanation of what changed or why.
We built Addrex to be different. Every validation response includes match codes, confidence scores, and detailed reason codes. You always know exactly what happened to your data.
We don't claim USPS DPV or CASS certification. We validate addresses against our continuously maintained national reference dataset and are transparent about our approach.
Our principles
Explainability first
Every result includes codes that tell you exactly what changed and why. No black boxes.
One engine, every mode
The same validation engine powers real-time API calls and bulk file processing. Consistent results everywhere.
Honest claims
We're transparent about what our service does and doesn't do. No misleading certifications.
Built for everyone
Upload a spreadsheet or use the API — same engine, same results, no technical skills required for the basics.
Ready to get started?
Clean your first addresses for free — upload a spreadsheet or create an account.