2 ms·

There's third-party vendors that provide an API to verify address information. QAS is one of that's used by some large retail sites: http://www.qas.com/ http:/

by tmcneal 15y ago

There's third-party vendors that provide an API to verify address information. QAS is one of that's used by some large retail sites: http://www.qas.com/ http://www.qas.com/

ars 15y ago
You don't need a third party: https://www.usps.com/webtools/htm/Address-Information-v3-1a.htm https://www.usps.com/webtools/htm/Address-Information-v3-1a....
- nicw 15y ago
  Woah, thanks. I didn't know the USPS provided this API