如何判断一个IP地址是否属于一个国家

Question

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

Answer 1

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

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

http://ipinfodb.com/ip_query_country.php?ip=74.125.45.100

返回：

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

Answer 2

只需一个简单的API 电话，例如https://ipapi.co/8.8.8.8/country/

美国

这是一个带有 working fiddle 的 C# 示例：

using System;
using System.Net;
using System.IO;
using System.Text;


public class Program
{
    public static void Main()
    {

      ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;

      HttpWebRequest request   = (HttpWebRequest)WebRequest.Create("https://ipapi.co/8.8.8.8/country/");
      HttpWebResponse response = (HttpWebResponse)request.GetResponse();

      var reader = new System.IO.StreamReader(response.GetResponseStream(), ASCIIEncoding.ASCII);
      Console.WriteLine(reader.ReadToEnd());

    }
}

Answer 3

你可以让谷歌帮你做。

• http://googlecode.blogspot.com/2008/08/two-new-ways-to-location-enable-your.html

您还可以根据需要支付一些服务：

• http://www.ip2location.com/
• http://www.maxmind.com/

Answer 4

这是一个免费的IP Address to Country database。

Answer 5

如果您不想使用类似 hostip.info 的 API，那么我建议您订阅 maxmind 并在本地运行主机查找数据库。

Answer 6

ip2cc - 通过 IP 地址查找国家和俄罗斯地区 Python 模块，使用脚本从最新的官方数据创建数据库。

此Python 实用程序从Regional Internet Registry 站点（arin、ripencc、apnic、lacnic、afrinic）加载（尽可能频繁地）最新信息，如shown in the source:

url_template = 'ftp://ftp.ripe.net/pub/stats/%s/delegated-%s-latest'
sources = {}
for name in ('arin', 'ripencc', 'apnic', 'lacnic', 'afrinic'):
    sources[name] = url_template % (name, name)

加载数据后，可以非常快速地离线回答查询。 可以轻松修改以直接回答原始问题，或者从命令行使用返回IP address 所属的国家/地区。

Answer 7

离线数据库，可免费获取IP2Location LITE DB1

创建表

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

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。请根据您安装的 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();
        }

    }
}

Answer 8

您可以使用的另一个服务是我自己的http://ipinfo.io，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
}

更多信息请参见http://ipinfo.io/developers。

Answer 9

以下是使用https://ipdata.co 的方法

//Common testing requirement. If you are consuming an API in a sandbox/test region, uncomment this line of code ONLY for non production uses.
//System.Net.ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };

//Be sure to run "Install-Package Microsoft.Net.Http" from your nuget command line.
using System;
using System.Net.Http;

var baseAddress = new Uri("https://api.ipdata.co/78.8.53.5");

using (var httpClient = new HttpClient{ BaseAddress = baseAddress })
{

  httpClient.DefaultRequestHeaders.TryAddWithoutValidation("accept", "application/json");

  using(var response = await httpClient.GetAsync("undefined"))
  {

        string responseData = await response.Content.ReadAsStringAsync();
  }
}

通过卷发

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
    }
}⏎ 

Answer 10

您可以使用IP Geolocation API 轻松做到这一点

它将返回国家、州、城市、时区和邮政编码。另外，请访问https://geo.ipify.org/docs 并免费试用。告诉我进展如何。

Answer 11

您可以使用https://astroip.co轻松查找任何IP地址

在 C# 中：

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();
 }

在卷曲中：

卷曲https://api.astroip.co/70.167.7.1/?api_key=1725e47c-1486-4369-aaff-463cc9764026

{
  "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"
}

Answer 12

这是一个将 IPAddress 转换为 UInt32 的扩展类。 从@vlam 的答案重构的代码

using System.Net;

namespace Module.IP2Location.Core.Extensions;

public static class IPAddressExtensions
{

    public static UInt32 ToUInt(this IPAddress address)
    {

        byte[] addrBytes = address.GetAddressBytes();
        if (BitConverter.IsLittleEndian)
        {
            List<byte> byteList = new List<byte>(addrBytes);
            byteList.Reverse();
            addrBytes = byteList.ToArray();
        }
        UInt32 ipno = 0;
        ipno = BitConverter.ToUInt32(addrBytes, 0);
        return ipno;
    }

}