Heroku and ip mask

Question

I\'m building a shopping site which uses a service which allows credit card payments (tranzilla), the service is requiring an IP or IP mask from which it will allow requests

Answer 1

You can also use Apigee to wrap the API in question - http://app.apigee.com/, and make your API call through Apigee instead of directly to the API in question. Then enter the IP that the Apigee call comes from, and you're set.