# Customer Internet Data
source: https://developer.mastercard.com/mastercard-gateway/documentation/gateway-features/data-and-reporting/supp-data/cust-internet-data/index.md

Customer Internet data includes information about the source of the e-commerce transaction. For example, the payer's email, IP address, or hostname.

The information is used for decision making during EMV 3-D Secure authentication and can be used to assess the risk of the transaction in the authorization process for card-not-present transactions.

The following methods are supported:

| Integration methods | Payment methods |              Transactions              |
|---------------------|-----------------|----------------------------------------|
| All                 | All             | * AUTHORIZE * PAY * AUTHENTICATE PAYER |

To view an example of an API request with customer Internet data, download the [Postman collection](https://www.postman.com/mastercard/mastercard-developers/collection/4fakvrd/mastercard-gateway-api).

Submit as much customer Internet data as possible in the request using the customer and device objects.

The submitted data is returned in the transaction response.

## Example of Customer Internet Data fields {#example-of-customer-internet-data-fields}

```json
{
  "customer": {
    "firstName": "John",
    "lastName": "Smith",
    "phone": "01 987654321",
    "mobilePhone": "07 2343334",
    "email": "Refer@datacash.com",
    "taxRegistrationId": "CTRI01"
  },
  "device": {
    "browser": "mozilla Firefox 5.0 / Windows 9.x",
    "ani": "0480897466",
    "hostname": "MC Test Box",
    "fingerprint": "shdffsda757 JKHAGEfjhad76hjh HFHHF777",
    "ipAddress": "10.12.132.125",
    "mobilePhoneModel": "APPLE 6S"
  }
}
```

**Internet Data API Reference** [\[REST\]](https://developer.mastercard.com/mastercard-gateway/documentation/api-reference/v100/rest/api-ops/index.md#transaction) [\[NVP\]](https://developer.mastercard.com/mastercard-gateway/documentation/api-reference/v100/nvp/api-ops/index.md#transaction)