> 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/dai-li/mobile-proxies/location-settings/asn-targeting.md).

# ASN 定向

我们的移动代理支持按 ASN 号码进行定位，这意味着你可以选择来自特定运营商的代理。你需要在请求中输入所需的 ASN 号码。下面是 T-Mobile 的示例，其在美国的 ASN 号码为 21928：

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

你可以找到 ASN 号码 [**这里**](https://asnlookup.com/)**.**

{% hint style="warning" %}
我们的 ASN 定位对所有用户开放，但某些 ASN 仅保留给已通过 KYC 审核的客户，可能会返回 `403 Access denied: restricted ASN` 错误。\
如果你需要访问受限的 ASN，请就 KYC 流程联系客户支持或你的客户经理。
{% 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 `502 Bad Gateway` 响应代码。在这种情况下，你应尝试另一个 ASN 号码。

{% hint style="info" %}
你每次请求只能使用 Country 或 ASN 参数之一。如果同时使用两个位置参数，则只会应用 Country 参数。
{% endhint %}


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