Instantly Validate any US Address

The Qualified Address US address verification web service uses the U.S. Postal Service® (USPS®) certified technology to verify, correct, and enhance any US address.

Our address verification software helps prevent spelling and formatting error by enforcing address verification during data entry.

The Qualified Address web service can also be utilized to cleanse your existing lists, schedule periodic scrubbing, or maintain integrity at point of entry. Address Entry Pro provides efficiency, and accuracy in gathering and maintaining address data.

Easy to Install

Address Entry Pro is simple to install, requires no maintenance - and can be completely integrated into your website, desktop software or database in minutes using XML or JavaScript.

Try it out Free!

Enter a US address and ZIP Code in the form below. It is not necessary to enter a city or state. Press "Validate Address" when you're ready to go.
This version uses JavaScript and you can have it correcting and validating addresses on your website in less than 15 minutes. We also have an XML Version for more experienced programmers who want to integrate the API into their software or website.

How will our Address Entry Pro benefit your business?

• Automatically add +4 Codes and Counties to addresses.
• Reduce fraudulent transactions and purchases.
• Reduce returned mail and credit card charge back fees.
• Find "undeliverable addresses" sending mail.
• Lower credit card merchant fees.
• Fewer Correction charges from major carriers like UPS, FedEx, etc.
• Keep your database clean of inaccurate addresses.
• Standardize spelling, punctuation, and abbreviation.

Get Started Now

All new subscriptions include a 14-day, 500-address Free Trial, so Choose the package that's right for you and get started now! >>