Cross-check an address against its postal code
Catch a mismatched street address and postal code before an order ships, by resolving each independently and comparing what they actually reveal.
Tag
#validation
How elevation data sources get validated
Elevation figures are checked against fixed, independently surveyed benchmark points with known heights, and consistency across nearby samples is a further useful sanity check.
Validate a postal code before you save it
Confirm a postal code actually resolves to a real place before it goes into your database, using a single lookup against the right country code.