US Address Validation extension, powered by ValidStreets.com lets you validate and verify US addresses.
* Check if USPS delivers to given address
* Check if address is active or inactive
* Verify house/building number
* Verify and fix spelling of street name/city
* Check if ZIP code is correct for given address
* Check if ZIP code belongs to military or diplomatic address
* Check if address belongs to commercial or residential address
* Show additional information about address