# 网站子域监测

Ptengine允许在一个档案中设置多个域名。此外，对于一个域名，可以设置多个子域名。

* 关于域名，无论有多少子域名，都被视为一个域名。

例如：

[www.\`sample.co.jp\`](http://www.`sample.co.jp`)

store.`sample.co.jp`

sale.`sample.co.jp`

这三个不同的子域名实际上属于同一个域名，即`sample.co.jp`，只需将其设置为一个域名即可，这样上述三个站点都会被计量。


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# 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/cn/faq/tracking-code/subdomain-tracking.md?ask=<question>
```

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.