C# 如何确定IP地址是否属于某个国家/地区

我如何使用c来确定特定IP地址来自哪个国家。我需要使用它来检查连接是否来自特定国家。

您可以在项目中使用此SQL数据来确定：。下载该数据并将其导入数据库以在本地运行检查

或者您可以使用他们的免费API返回包含国家代码和国家名称的XML。您可以使用要检查的IP地址向以下URL发出请求，如本例所示：

返回：

<Response>
<Ip>74.125.45.100</Ip>
<Status>OK</Status>
<CountryCode>US</CountryCode>
<CountryName>United States</CountryName>
</Response>

---

如果你不想使用像hostip.info这样的API，那么我建议订阅maxmind并在本地运行主机查找数据库。

你可以让谷歌帮你做

还有一些服务，您可以根据自己的需要付费：

这里是一个免费的。

-Lookup country and Russia region by IP address Python模块，该模块使用脚本从最新的官方数据创建数据库

此Python实用程序根据您的喜好频繁加载来自arin、RIMECC、apnic、lacnic、afrinic站点的最新信息，如下所示：

一旦加载了数据，查询就可以离线快速回答。

---

可以轻松修改以直接回答原始问题，也可以从命令行返回IP地址所属的国家。

您可以使用的另一个服务是my own，它返回位置、组织和其他信息：

$ curl ipinfo.io/8.8.8.8
{
  "ip": "8.8.8.8",
  "hostname": "google-public-dns-a.google.com",
  "loc": "37.385999999999996,-122.0838",
  "org": "AS15169 Google Inc.",
  "city": "Mountain View",
  "region": "California",
  "country": "US",
  "phone": 650
}

有关更多信息，请参阅。

只需一个简单的电话，例如

美国

下面是一个C示例：

---

下面是如何使用

过孔旋度

curl https://api.ipdata.co/78.8.53.5
{
    "ip": "78.8.53.5",
    "city": "G\u0142og\u00f3w",
    "region": "Lower Silesia",
    "region_code": "DS",
    "country_name": "Poland",
    "country_code": "PL",
    "continent_name": "Europe",
    "continent_code": "EU",
    "latitude": 51.6461,
    "longitude": 16.1678,
    "asn": "AS12741",
    "organisation": "Netia SA",
    "postal": "67-200",
    "currency": "PLN",
    "currency_symbol": "z\u0142",
    "calling_code": "48",
    "flag": "https://ipdata.co/flags/pl.png",
    "emoji_flag": "\ud83c\uddf5\ud83c\uddf1",
    "time_zone": "Europe/Warsaw",
    "is_eu": true,
    "suspicious_factors": {
        "is_tor": false
    }
}⏎ 

---

对于离线数据库，您可以免费获得

创建表的步骤

CREATE DATABASE ip2location
GO

USE ip2location
GO

CREATE TABLE [ip2location].[dbo].[ip2location_db1](
    [ip_from] float NOT NULL,
    [ip_to] float NOT NULL,
    [country_code] nvarchar(2) NOT NULL,
    [country_name] nvarchar(64) NOT NULL,
) ON [PRIMARY]
GO

CREATE INDEX [ip_from] ON [ip2location].[dbo].[ip2location_db1]([ip_from]) ON [PRIMARY]
GO

CREATE INDEX [ip_to] ON [ip2location].[dbo].[ip2location_db1]([ip_to]) ON [PRIMARY]
GO

要导入数据

BULK INSERT [ip2location].[dbo].[ip2location_db1]
    FROM 'C:\[path to your CSV file]\IP2LOCATION-LITE-DB1.CSV'
    WITH
    (
        FORMATFILE = 'C:\[path to your DB1.FMT file]\DB1.FMT'
    )
GO

对于FMT文件

10.0
5
1 SQLCHAR 0 1 "\"" 0 first_double_quote  Latin1_General_CI_AI
2 SQLCHAR 0 20 "\",\"" 1 ip_from ""
3 SQLCHAR 0 20 "\",\"" 2 ip_to ""
4 SQLCHAR 0 2 "\",\"" 3 country_code Latin1_General_CI_AI
5 SQLCHAR 0 64 "\"\r\n" 4 country_name Latin1_General_CI_AI

FMT代码的第一行表示bcp的版本。请根据安装的MS-SQL更改版本

SQL Server 2016 12.0

SQL Server 2014 12.0

SQL Server 2012 11.0

SQL Server 2008/2008 R2 10.0

SQL Server 2005 9.0

SQL Server 2000 8.0

SQL Server 7.0 7.0

SQL Server 6.5 6.5

查询MSSQL的C代码

using System.Data.SqlClient;
using System.Numerics;
using System.Net;
using System.Text;
public class Form1 {

    private void Form1_Load(object sender, System.EventArgs e) {
        string ip = "8.8.8.8";
        this.IP2Location(ip);
    }

    private void IP2Location(string myip) {
        IPAddress address = null;
        if (IPAddress.TryParse(myip, address)) {
            byte[] addrBytes = address.GetAddressBytes();
            this.LittleEndian(addrBytes);
            UInt32 ipno = 0;
            ipno = BitConverter.ToUInt32(addrBytes, 0);
            string sql = "SELECT TOP 1 * FROM ip2location_db1 WHERE ip_to >= \'" + ipno.ToString() + "\'";
            object conn = new SqlConnection("Server=yourserver;Database=yourdatabase;User Id=youruserid;Password=yourpassword;");
            object comm = new SqlCommand(sql, conn);
            SqlDataReader reader;
            comm.Connection.Open();
            reader = comm.ExecuteReader(CommandBehavior.CloseConnection);
            int x = 0;
            object sb = new StringBuilder(250);
            if (reader.HasRows) {
                if (reader.Read()) {
                    for (x = 0; (x <= (reader.FieldCount() - 1)); x++) {
                        sb.Append((reader.GetName(x) + (": " + (reader.GetValue(x) + "\r\n"))));
                    }
                }
            }

            reader.Close();
            MsgBox(sb.ToString());
        }

    }

    private void LittleEndian(ref byte[] byteArr) {
        if (BitConverter.IsLittleEndian) {
            List<byte> byteList = new List<byte>(byteArr);
            byteList.Reverse();
            byteArr = byteList.ToArray();
        }

    }
}

---

您可以使用

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它将返回国家、州、城市、时区和邮政编码。此外，免费访问和尝试。让我知道它是如何运行的。

您可以使用

在C中：

卷曲：

卷曲

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我需要的数据是可用的离线，因为它将用于统计数据。因此，我将使用sql选项。请注意，IP分配偶尔会更改。所以记得偶尔更新一下你的数据库。你需要更新的频率取决于你在做什么；对于简单的统计数据，你可以决定每年更新一次。这已经改变了：你现在必须免费注册才能使用他们的API。请看这里：这似乎已经改变，因为，该网站现在有一个链接在主导航最终导致以下下载：归属要求，但免费的商业用途。此处的其他信息，即IP必须转换为INT：

BULK INSERT [ip2location].[dbo].[ip2location_db1]
    FROM 'C:\[path to your CSV file]\IP2LOCATION-LITE-DB1.CSV'
    WITH
    (
        FORMATFILE = 'C:\[path to your DB1.FMT file]\DB1.FMT'
    )
GO

10.0
5
1 SQLCHAR 0 1 "\"" 0 first_double_quote  Latin1_General_CI_AI
2 SQLCHAR 0 20 "\",\"" 1 ip_from ""
3 SQLCHAR 0 20 "\",\"" 2 ip_to ""
4 SQLCHAR 0 2 "\",\"" 3 country_code Latin1_General_CI_AI
5 SQLCHAR 0 64 "\"\r\n" 4 country_name Latin1_General_CI_AI

using System.Data.SqlClient;
using System.Numerics;
using System.Net;
using System.Text;
public class Form1 {

    private void Form1_Load(object sender, System.EventArgs e) {
        string ip = "8.8.8.8";
        this.IP2Location(ip);
    }

    private void IP2Location(string myip) {
        IPAddress address = null;
        if (IPAddress.TryParse(myip, address)) {
            byte[] addrBytes = address.GetAddressBytes();
            this.LittleEndian(addrBytes);
            UInt32 ipno = 0;
            ipno = BitConverter.ToUInt32(addrBytes, 0);
            string sql = "SELECT TOP 1 * FROM ip2location_db1 WHERE ip_to >= \'" + ipno.ToString() + "\'";
            object conn = new SqlConnection("Server=yourserver;Database=yourdatabase;User Id=youruserid;Password=yourpassword;");
            object comm = new SqlCommand(sql, conn);
            SqlDataReader reader;
            comm.Connection.Open();
            reader = comm.ExecuteReader(CommandBehavior.CloseConnection);
            int x = 0;
            object sb = new StringBuilder(250);
            if (reader.HasRows) {
                if (reader.Read()) {
                    for (x = 0; (x <= (reader.FieldCount() - 1)); x++) {
                        sb.Append((reader.GetName(x) + (": " + (reader.GetValue(x) + "\r\n"))));
                    }
                }
            }

            reader.Close();
            MsgBox(sb.ToString());
        }

    }

    private void LittleEndian(ref byte[] byteArr) {
        if (BitConverter.IsLittleEndian) {
            List<byte> byteList = new List<byte>(byteArr);
            byteList.Reverse();
            byteArr = byteList.ToArray();
        }

    }
}

var url = "https://api.astroip.co/70.167.7.1/?api_key=1725e47c-1486-4369-aaff-463cc9764026";

using (var httpClient = new HttpClient())
using(var resp = await httpClient.GetAsync(url))
{
    string resp = await resp.Content.ReadAsStringAsync();
 }

{
  "status_code": 200,
  "geo": {
    "is_metric": false,
    "is_eu": false,
    "longitude": -97.822,
    "latitude": 37.751,
    "country_geo_id": 6252001,
    "zip_code": null,
    "city": null,
    "region_code": null,
    "region_name": null,
    "continent_code": "NA",
    "continent_name": "North America",
    "capital": "Washington",
    "country_name": "United States",
    "country_code": "US"
  },
  "asn": {
    "route": "70.167.6.0/23",
    "type": "isp",
    "domain": "cox.net",
    "organization": "ASN-CXA-ALL-CCI-22773-RDC",
    "asn": "AS22773"
  },
  "currency": {
    "native_name": "US Dollar",
    "code": "USD",
    "name": "US Dollar",
    "symbol": "$"
  },
  "timezone": {
    "is_dst": false,
    "gmt_offset": -21600,
    "date_time": "2020-11-23T15:15:56-06:00",
    "microsoft_name": "Central Standard Time",
    "iana_name": "America/Chicago"
  },
  "security": {
    "is_crawler": false,
    "is_proxy": false,
    "is_tor": false,
    "tor_insights": null,
    "proxy_insights": null,
    "crawler_insights": null
  },
  "crypto": null,
  "user_agent": null,
  "error": null,
  "hostname": "wsip-70-167-7-1.sd.sd.cox.net",
  "ip_type": "ipv4",
  "ip": "70.167.7.1"
}