"jsonip.com is a free utility service that returns a client's IP address in a JSON object with support for JSONP, CORS, and direct requests. It serves millions of requests each day for websites, servers, mobile devices and more from all around the world. jsonip has been in service since November 2010. The basic service has always been free, supports unlimited requests, and will remain so into the future. IPv6 is coming soon. Going further with Pro With the new Pro service, you get special features and even more information about your users: IP address SSL access IP geo location - Country and city to within best available accuracy ISP Info Time zone data Full referer data Browser and OS info Unlimited requests (same as free basic service) JSONP (same as free) CORS (same as free) Pricing $20 USD per month Worldwide availability at launch" #pricey #simple #SaaS #ideas #copy #json #Javascript #monthly #B2B #pub