Update README.md

README.md

@@ -278,6 +278,7 @@ API | Description | Auth | HTTPS | CORS |
 | [Gitlab](https://docs.gitlab.com/ee/api/) | Automate GitLab interaction programmatically | `OAuth` | Yes | Unknown |
 | [Gitter](https://developer.gitter.im/docs/welcome) | Chat for Developers | `OAuth` | Yes | Unknown |
 | [Hexabin](https://hexabin.herokuapp.com/) | Convert and retrieve hexadecimal, binary, decimal, and octal values with ease | No | No | Unknown |
+| [Host.io](https://host.io) | Domains Data API for Developers | `apiKey` | Yes | Yes |
 | [HTTP2.Pro](https://http2.pro/doc/api) | Test endpoints for client and server HTTP/2 protocol support | No | Yes | Unknown |
 | [IBM Text to Speech](https://cloud.ibm.com/docs/text-to-speech/getting-started.html) | Convert text to speech | `apiKey` | Yes | Yes |
 | [IFTTT](https://platform.ifttt.com/docs/connect_api) | IFTTT Connect API | No | Yes | Unknown |