# Can I use IP whitelisting for authentication when using the free Datacenter IPs? Yes, you can use IP whitelisting as an authentication method with the free Datacenter IPs.\ This allows you to specify your own IP addresses from which you'll access the proxies. Please note that our fair usage policy still applies regardless of the authentication method used. --- # 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://developers.oxylabs.io/help-center/free-datacenter-proxies/can-i-use-ip-whitelisting-for-authentication-when-using-the-free-datacenter-ips.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.