All of the public data assets used in VerificationPoint processing. We are making these available to all to help other validation/verificaiton providers to improve their products and to allow other providers to contribute to improve the data.
This file contains domain names of email providers that are free, like "gmail.com" and "yahoo.com". This file does not contain ISP email address domains because typically you have to subscribe to a service from an ISP to receive the email services.
This file contains domain names of each Internet Service Provider (ISP) that provides email services as part of their internet services.