# ZIP/邮政编码

要使用 ZIP 代码连接代理，请添加并指定 `postalcode` 参数，并在用户名中使用 **五位数** ZIP 代码。此参数必须与国家代码参数一起使用 `cc` 以及一个不区分大小写的 2 字母国家代码，采用 [**3166-1 alpha-2 格式**](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2). 

用户名示例如下：\
`customer-USERNAME-cc-US-postalcode-90210`

{% hint style="info" %}
目前我们仅支持基于美国的 ZIP 代码定位。 
{% endhint %}

{% hint style="info" %}
使用 ZIP 代码的代理位置是通过 [**MaxMind IP Geolocation**](https://www.maxmind.com/en/geoip-demo) 数据库进行匹配的。将 IP 地址与其他 IP 地理位置数据库比对时，ZIP 代码可能会存在不一致。
{% endhint %}

#### 代码示例

在此示例中，对 `ip.oxylabs.io/location` 是通过位于美国、ZIP 代码为 `90210`:

{% tabs %}
{% tab title="cURL" %}

```shell
curl -x pr.oxylabs.io:7777 -U "customer-USERNAME-cc-US-postalcode-90210:PASSWORD" https://ip.oxylabs.io/location
```

{% endtab %}

{% tab title="PHP" %}

```php
<?php
$username = 'USERNAME';
$password = 'PASSWORD';
$country = 'US';
$postalcode = '90210';
$proxy = 'pr.oxylabs.io:7777';
$query = curl_init('https://ip.oxylabs.io/location');
curl_setopt($query, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($query, CURLOPT_PROXY, "http://$proxy");
curl_setopt($query, CURLOPT_PROXYUSERPWD, "customer-$username-cc-$country-postalcode-$postalcode:$password");
$output = curl_exec($query);
curl_close($query);
if ($output)
    echo $output;
?>
```

{% endtab %}

{% tab title="Python" %}

```python
import urllib.request
import random
username = 'USERNAME'
password = 'PASSWORD'
country = 'US'
postalcode = '90210'
entry = ('http://customer-%s-cc-%s-postalcode-%s:%s@pr.oxylabs.io:7777' %
    (username, country, postalcode, password))
query = urllib.request.ProxyHandler({
    'http': entry,
    'https': entry,
})
execute = urllib.request.build_opener(query)
print(execute.open('https://ip.oxylabs.io/location').read())
```

{% endtab %}

{% tab title="Java" %}

```java
package example;

import org.apache.http.HttpHost;
import org.apache.http.client.fluent.*;

public class Example {
    public static void main(String[] args) throws Exception {
        HttpHost entry = new HttpHost("pr.oxylabs.io", 7777);
        String query = Executor.newInstance()
            .auth(entry, "customer-USERNAME-cc-US-postalcode-90210", "PASS")
            .execute(Request.Get("https://ip.oxylabs.io/location").viaProxy(entry))
            .returnContent().asString();
        System.out.println(query);
    }
}
```

{% endtab %}

{% tab title="C#" %}

```csharp
using System;
using System.Net;

class Example
{
    static void Main()
    {
        var client = new WebClient();
        client.Proxy = new WebProxy("pr.oxylabs.io:7777");
        client.Proxy.Credentials = new NetworkCredential("customer-USERNAME-cc-US-postalcode-90210", "PASSWORD");
        Console.WriteLine(client.DownloadString("https://ip.oxylabs.io/location"));
    }
}
```

{% endtab %}

{% tab title="Ruby" %}

```ruby
require 'uri'
require 'net/http'

uri = URI.parse('https://ip.oxylabs.io/location')
proxy = Net::HTTP::Proxy('pr.oxylabs.io', 7777, 'customer-USERNAME-cc-US-postalcode-90210', 'PASSWORD')

req = Net::HTTP::Get.new(uri.path)

result = proxy.start(uri.host,uri.port) do |http|
    http.request(req)
end

puts result.body
```

{% endtab %}
{% endtabs %}