---
title: ".hk"
url: "https://help.internetx.com/en/api/epp-hk/"
lang: "en"
section: "API reference — EPP API"
breadcrumb: "API reference > EPP extensions > TLD extensions"
updated: "2023-12-07"
---

# .hk

## Contact extensions

| Keyword | Occurs | Type | Format | Description |
| --- | --- | --- | --- | --- |
| documentType | 0 - 1 | enum | [HkDocumentTypeConstants](/en/api/core-hk-document-type-constants/) | Document type für persons and organizations. |
| others | 0 - 1 | string |  | Additional description field for OTHIDV and OTHORG |
| documentNumber | 0 - 1 | string |  | Document number (for example: identification card number) |
| documentOrigin | 0 - 1 | string |  | Country of the issuing authority. |
| above18 | 0 - 1 | boolean |  | For "Person" only. Is the person 18 years of age or older?<br>Values:<br>• Yes = the person is 18 years of age or older<br>• No = the person is younger than 18<br>Default = No |
| industry\_type | 0 - 1 | enum | [HkIndustryTypeConstants](/de/api/core-hkindustrytypeconstants/) | Branch of industry |

## XML example

```
<extension>
	<hk:contact xmlns:hk="urn:org:domainrobot:ns:contact:hk-1.0">
		<hk:documentType>OTHID</hk:documentType>
		<hk:others>STUDENTCARD</hk:others>
		<hk:documentNumber>123BR456</hk:documentNumber>
		<hk:documentOrigin>DE</hk:documentOrigin>
		<hk:above18>false</hk:above18>
	</hk:contact>
</extension>
```