---
title: Origin Rules examples
description: Example origin rules for routing and header modifications.
image: https://developers.cloudflare.com/core-services-preview.png
---

> Documentation Index  
> Fetch the complete documentation index at: https://developers.cloudflare.com/rules/llms.txt  
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# Origin Rules examples

[Change the HTTP Host header and DNS recordCreate an origin rule to change the HTTP Host header and the resolved DNS record.](https://developers.cloudflare.com/rules/origin-rules/examples/change-http-host-header/)[Change the destination portCreate an origin rule to change the destination port.](https://developers.cloudflare.com/rules/origin-rules/examples/change-port/)[Define a single origin rule using TerraformCreate an origin rule using Terraform to override the Host header, the resolved hostname, and the destination port of API requests.](https://developers.cloudflare.com/rules/origin-rules/examples/define-single-origin-terraform/)

```json
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```