# Subdomain Tracking Ptengine allows you to set up multiple domains within a single profile. Additionally, multiple subdomains can be configured for a single domain. * Regardless of how many subdomains a domain has, they are all considered a single domain. For example: [www.\`sample.co.jp\`](http://www.`sample.co.jp`) store.`sample.co.jp` sale.`sample.co.jp` These three different subdomains actually belong to the same domain, `sample.co.jp`. You only need to set it up as one domain, and all three sites will be tracked. --- # 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://helps.ptengine.com/en/faq/tracking-code/subdomain-tracking.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.