# Card Verifications
Determine the validity of your customer's card to maximize authorization rates.
__Authentication header__
```
Authorization: {your_credentials}
```
Replace `{your_credentials}` with your base64-encoded Basic Auth username and password given to your by your Implementation Manager.
You **must** use the `Authorization` header for any request you send to our Card Verifications API.
__Accept/Content-Type header for card verifications__
```
Content-Type : application/vnd.worldpay.cardVerifications-v6+json,
Accept : application/vnd.worldpay.cardVerifications-v6+json
```
__Accept/Content-Type header for ACH verifications (US accounts)__
```
Content-Type : application/vnd.worldpay.achVerifications-v6+json,
Accept : application/vnd.worldpay.achVerifications-v6+json
```
We use the Accept header to identify which version of our API you are using. You must use the Accept header for any request you send to our Card Verifications API.
We require the Content-Type header if the request you're sending includes a request body, and if the HTTP method is a `POST` or a `PUT`.
__DNS whitelisting__
Whitelist the following URLs:
* `https://try.access.worldpay-bsh.securedataplatform.com/`
* `https://access.worldpay-bsh.securedataplatform.com/`
Please ensure you use DNS whitelisting, not explicit IP whitelisting.
Version: 6
Metadata:
- category: ["Verifications"]
- business: ["Enterprise"]
- catalog-list: true
- generated: false
## Servers
Test (Try)
```
https://try.access.worldpay-bsh.securedataplatform.com
```
Live
```
https://access.worldpay-bsh.securedataplatform.com
```
## Security
### BasicAuth
username:password = merchant1:password
Base-64 encoded = bWVyY2hhbnQxcGFzc3dvcmQ=
Type: http
Scheme: basic
## Download OpenAPI description
[Card Verifications](https://developer.worldpay-bsh.securedataplatform.com/_bundle/products/card-verifications/@v6/openapi.yaml)
## Other
### Card Verification / Name Inquiry
- [POST /cardVerifications](https://developer.worldpay-bsh.securedataplatform.com/products/card-verifications/openapi/other/cardverify.md): Verify your customer's card. Perform a name inquiry to verify the name of the cardholder.
### ACH verification
- [POST /achVerifications](https://developer.worldpay-bsh.securedataplatform.com/products/card-verifications/openapi/other/ach.md): Successful account verification outcome.
### Query a previous verification
- [GET /cardVerifications/{linkData}](https://developer.worldpay-bsh.securedataplatform.com/products/card-verifications/openapi/other/getcardverificationbyresourceid.md): Querying of a successful verification.