How do you perform address validation?
Is it even possible to perform address (physical, not e-mail) validation? It seems like the sheer number of address formats, even in the US alone, would make this a fairly difficult task. On the other hand, it seems like a task that would be necessary for several business requirements. Tim Farley Here's a free and sort of "outside the box" way to do it. Not 100% perfect, but it should reject blatantly non-existent addresses. Submit the entire address to Google's geocoding web service . This service attempts to return the exact coordinates of the location you feed it, i.e. latitude and