# X-CDN Header The **X-CDN Header** feature for Dynamic Content Acceleration operates the same way as in Static Content Delivery.\ When enabled, CDN edge servers include the `X-CDN` header in origin requests, allowing your origin to identify and log CDN-proxied traffic. This header is inserted only on the origin-facing request path and does not modify viewer responses, caching behavior, or delivery logic. For configuration details, header behavior, and examples, refer to the main documentation:\ **Learn more in the** [**X-CDN Header documentation**](/products/performance-cdn/static-content-delivery/advanced-configuration/headers/x-cdn-header.md)**.** --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://clients.medianova.com/products/performance-cdn/dynamic-content-acceleration/advanced-configuration/headers/x-cdn-header.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.