> For the complete documentation index, see [llms.txt](https://docs.dataimpulse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.dataimpulse.com/dataimpulse-documentation-zh-cn/dai-li/can-shu/cheng-shi.md).

# 城市

添加一个 `城市` 参数以缩小到城市级别的定位。 

例如， `cr.es;city.madrid,barcelona` 表示来自马德里、巴塞罗那和西班牙的代理将处理该查询。 

以下是一些国家和城市参数有效组合的示例：

`cr.de;city.berlin`

`cr.br;city.salvador`

**代码示例**

在此示例中，针对 gw\.dataimpulse.com 的查询将从位于德国柏林的 IP 地址执行：

```
curl -x "http://login__cr.de;city.berlin:password@gw.dataimpulse.com:823" https://api.ipify.org/
```

我们无法保证在任何特定时间都能提供来自某个特定城市的代理。但大多数受欢迎的城市都有良好覆盖。

{% hint style="info" %}
重要的是要注意，选择国家是指定城市、州、邮编和 ASN 定位的强制要求。
{% endhint %}

***

您现在可以使用 `nocity` 参数排除特定州。

**示例：** 要定位德国但排除柏林，请使用：

`cr.de;nocity.berlin`

{% hint style="info" %}
通过 `nocity` 参数路由的流量，以及 `城市` 参数按标准费率的两倍计费。
{% endhint %}


---

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