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# Real-time domain registration via the API

||| ℹ️ **Note:** This article applies to users of our API.
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To register domains via our API and use the **domains, action: order** module, the **postpaid billing** option must be activated on your customer account.

* [Important information](#3-important-information)
* [Activating postpaid billing](#3-activating-postpaid-billing)
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### 📋 Important information

**Once postpaid billing is enabled, you will receive a consolidated invoice twice a month:**
  
* **1st of the month**: Covering all orders from the previous period.
* **15th of the month**: Covering all orders from the previous period.

The invoice will include all domains ordered via the API during the respective period.

### 📞 Activating postpaid billing

Would you like to activate postpaid billing?  
Please contact us. We are happy to assist you!
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| 📬 Questions? Feel free to reach out to us.