us-street.api.smarty.com is not a typical website β it's an API endpoint that currently returns a 404 error. It belongs to Smarty (formerly SmartyStreets), a well-known provider of USPS address validation services. While the parent company is legitimate, this particular subdomain isn't serving any content. If you're researching us-street.api.smarty.com reviews, you'll find no user experiences because the endpoint doesn't actually work. For a business offering an API, you'd normally expect documentation, pricing, and support channels on the main site β and Smarty provides those at smarty.com. The SSL certificate and DNS setup are fine, but there's no reason to engage with this URL as it stands. If you're asking 'is us-street.api.smarty.com a scam,' the answer is no β but it's also not a functioning resource. Stick to the main Smarty website for address validation.