> For the complete documentation index, see [llms.txt](https://developers.oxylabs.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.oxylabs.io/products/cn/proxies/mobile-proxies/location-settings/asn-targeting.md).

# ASN 定向

按 ASN 定位移动代理并选择特定运营商。了解请求及 ASN 定向限制。

我们的移动代理支持按 ASN 编号进行目标定位，这意味着你可以选择来自特定运营商的代理。你必须在请求中输入所需的 ASN 编号。下面是 T-Mobile 的示例，其在美国的 ASN 编号为 21928：

`customer-username-ASN-21928-sessid-abcde12345:password`

您可以查找 ASN 编号 [**这里**](https://asnlookup.com/)**.**

{% hint style="warning" %}
我们的 ASN 定向对所有用户都可用，不过某些 ASN 保留给已通过 KYC 审核的客户，可能会返回一个 `403 访问被拒绝：受限 ASN` 错误。\
如果您需要访问受限 ASN，请就 KYC 流程联系客服支持或您的客户经理。
{% endhint %}

移动代理池本质上是动态的，因此如果当时该特定 ASN 下没有 IP，你将收到一个 `502 错误网关` 响应代码。在这种情况下，您应尝试另一个 ASN 编号。

{% hint style="info" %}
每个请求您都可以使用 Country 或 ASN 参数。如果同时使用这两个位置参数，则只会应用 Country 参数。
{% endhint %}


---

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