How to determine if an IP address belongs to a cou

问题:

How would i determine the country that a spcific IP address is originating from using c#. I need to use this to check if connections originate from a specific country.

回答1:

You can use this SQL data in your project to determine that: IP address geolocation SQL database. Download that data and import it into your database to run checks locally.

Or you can use their free API that returns XML containing the country code and country name. You'd make a request to the following URL with the IP address you wanted to check, as seen in this example:

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

Returns:

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

回答2:

Just a simple API call e.g. https://ipapi.co/8.8.8.8/country/

US

Here's a C# example with working fiddle :

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());

    }
}

回答3:

you can ask google to do it for you.

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

there are also services that you can pay for you want:

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

回答4:

Here is a free IP Address to Country database.

回答5:

If you don't want to use an API like perhaps hostip.info, then I'd suggest subscribing to maxmind and running a host lookup database locally.

回答6:

ip2cc - Lookup country and Russia region by IP address Python module with script to create database from up-to-date official data.

This Python utility loads (as frequently as you like) up-to-date information from Regional Internet Registry sites (arin, ripencc, apnic, lacnic, afrinic), as 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)

Once the data is loaded, queries can be answered offline and very quickly. Can be easily modified to directly answer the original question, or used from the command line to return the country an IP address belongs to.

回答7:

Another service you could use is my own, http://ipinfo.io, which returns location, organization and other information:

$ 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
}

See http://ipinfo.io/developers for more information.

回答8:

Here's how to do this with https://ipdata.co

//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();
  }
}

Via Curl

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
    }
}⏎ 

回答9:

For offline database, you can get the free IP2Location LITE DB1

To create the table

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

To import the data

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

For the FMT file

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

The first line of the FMT code indicates the version of bcp. Please change the version as according to your MS-SQL installed.

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

C# code to query MSSQL

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();
        }

    }
}