You can use MailSlurp's REST API to query domains to determine a servers IP address. Here is an example using curl.

```sh
curl -X POST "https://api.mailslurp.com/mail-server/describe/ip-address?name=www.mailslurp.com" -H  "accept: application/json" -H  "x-api-key: YOUR_API_KEY"
```

Note the `x-api-key` header: this is your free API Key. Sign up to [create an account](https://app.mailslurp.com).

## SDKs

- [CSharp DotNet IP Address Library](/docs/csharp/)
- [Get domain IP address in Ruby](/docs/ruby/)
- [Resolve IP address in Java](/docs/java/)
- [PHP IP Address Library](/docs/php/)