http://freegeoip.net/xml/162.158.88.214

<Response>
<IP>162.158.88.214</IP>
<CountryCode>DE</CountryCode>
<CountryName>Germany</CountryName>
<RegionCode>HE</RegionCode>
<RegionName>Hesse</RegionName>
<City>Frankfurt am Main</City>
<ZipCode>60438</ZipCode>
<TimeZone>Europe/Berlin</TimeZone>
<Latitude>50.1167</Latitude>
<Longitude>8.6833</Longitude>
<MetroCode>0</MetroCode>
</Response>

 public static void ReadXmlElements(string ipAddress)
        {           
            XDocument xdoc=XDocument.Load("http://www.freegeoip.net/xml/" + ipAddress);
            var country = xdoc.Descendants("Response").Select(c => new
            {
                IpAddress = c.Element("IP")?.Value,
                CountryCode = c.Element("CountryCode")?.Value,
                CountryName = c.Element("CountryName")?.Value,
                RegionCode = c.Element("RegionCode")?.Value,
                RegionName = c.Element("RegionName")?.Value,
                City = c.Element("City")?.Value,
                ZipCode = c.Element("ZipCode")?.Value,
                TimeZone = c.Element("TimeZone")?.Value,
                Latitude = c.Element("Latitude")?.Value,
                Longitude = c.Element("Longitude")?.Value,
                MetroCode = c.Element("MetroCode")?.Value,
            });

             var countryData = country.First();
            Console.WriteLine("CountryName :" + countryData.CountryName 
                +Environment.NewLine + "CountryCode :"+countryData.CountryCode
                + Environment.NewLine + "RegionCode :"+countryData.RegionCode
                + Environment.NewLine + "RegionName :" + countryData.RegionName
                + Environment.NewLine + "City :" + countryData.City
                + Environment.NewLine + "ZipCode :" + countryData.ZipCode
                + Environment.NewLine + "TimeZone :" + countryData.TimeZone
                + Environment.NewLine + "Latitude :" + countryData.Latitude
                + Environment.NewLine + "Longitude :" + countryData.Longitude
                + Environment.NewLine + "MetroCode :" + countryData.MetroCode
                ); 
            
            Console.ReadKey();
        }

در متد main برنامه، متد ReadXmlElements را فراخوانی کرده و آدرس آی پی مورد نظر را پاس میدهیم:  

static void Main(string[] args)
        {
            ReadXmlElements("162.158.88.214");
        }

public class WorldCountries
    {
        public string CountryCode { get; set; }
        public string CountryName { get; set; }

    }

 public static class GenerateCountries
    {
        public static IList<WorldCountries> CreateCountries()
        {
            return new[]
                {
new WorldCountries { CountryCode = "AF", CountryName = "Afghanistan"},
new WorldCountries { CountryCode = "AX", CountryName = "Åland Islands"},
new WorldCountries { CountryCode = "AL", CountryName = "Albania"},
new WorldCountries { CountryCode = "DZ", CountryName = "Algeria"},
new WorldCountries { CountryCode = "AS", CountryName = "American Samoa"},
new WorldCountries { CountryCode = "AD", CountryName = "Andorra"},
new WorldCountries { CountryCode = "AO", CountryName = "Angola"},
new WorldCountries { CountryCode = "AI", CountryName = "Anguilla"},
new WorldCountries { CountryCode = "AQ", CountryName = "Antarctica"},
new WorldCountries { CountryCode = "AG", CountryName = "Antigua and Barbuda"},
new WorldCountries { CountryCode = "AR", CountryName = "Argentina"},
new WorldCountries { CountryCode = "AM", CountryName = "Armenia"},
new WorldCountries { CountryCode = "AW", CountryName = "Aruba"},
new WorldCountries { CountryCode = "AU", CountryName = "Australia"},
new WorldCountries { CountryCode = "AT", CountryName = "Austria"},
new WorldCountries { CountryCode = "AZ", CountryName = "Azerbaijan"},
new WorldCountries { CountryCode = "BS", CountryName = "Bahamas"},
new WorldCountries { CountryCode = "BH", CountryName = "Bahrain"},
new WorldCountries { CountryCode = "BD", CountryName = "Bangladesh"},
new WorldCountries { CountryCode = "BB", CountryName = "Barbados"},
new WorldCountries { CountryCode = "BY", CountryName = "Belarus"},
new WorldCountries { CountryCode = "BE", CountryName = "Belgium"},
new WorldCountries { CountryCode = "BZ", CountryName = "Belize"},
new WorldCountries { CountryCode = "BJ", CountryName = "Benin"},
new WorldCountries { CountryCode = "BM", CountryName = "Bermuda"},
new WorldCountries { CountryCode = "BT", CountryName = "Bhutan"},
new WorldCountries { CountryCode = "BA", CountryName = "Bosnia and Herzegovina"},
new WorldCountries { CountryCode = "BW", CountryName = "Botswana"},
new WorldCountries { CountryCode = "BV", CountryName = "Bouvet Island"},
new WorldCountries { CountryCode = "BR", CountryName = "Brazil"},
new WorldCountries { CountryCode = "IO", CountryName = "British Indian Ocean Territory"},
new WorldCountries { CountryCode = "BN", CountryName = "Brunei Darussalam"},
new WorldCountries { CountryCode = "BG", CountryName = "Bulgaria"},
new WorldCountries { CountryCode = "BF", CountryName = "Burkina Faso"},
new WorldCountries { CountryCode = "BI", CountryName = "Burundi"},
new WorldCountries { CountryCode = "KH", CountryName = "Cambodia"},
new WorldCountries { CountryCode = "CM", CountryName = "Cameroon"},
new WorldCountries { CountryCode = "CA", CountryName = "Canada"},
new WorldCountries { CountryCode = "CV", CountryName = "Cape Verde"},
new WorldCountries { CountryCode = "KY", CountryName = "Cayman Islands"},
new WorldCountries { CountryCode = "CF", CountryName = "Central African Republic"},
new WorldCountries { CountryCode = "TD", CountryName = "Chad"},
new WorldCountries { CountryCode = "CL", CountryName = "Chile"},
new WorldCountries { CountryCode = "CN", CountryName = "China"},
new WorldCountries { CountryCode = "CX", CountryName = "Christmas Island"},
new WorldCountries { CountryCode = "CC", CountryName = "Cocos (Keeling) Islands"},
new WorldCountries { CountryCode = "CO", CountryName = "Colombia"},
new WorldCountries { CountryCode = "KM", CountryName = "Comoros"},
new WorldCountries { CountryCode = "CG", CountryName = "Congo"},
new WorldCountries { CountryCode = "CK", CountryName = "Cook Islands"},
new WorldCountries { CountryCode = "CR", CountryName = "Costa Rica"},
new WorldCountries { CountryCode = "HR", CountryName = "Croatia"},
new WorldCountries { CountryCode = "CU", CountryName = "Cuba"},
new WorldCountries { CountryCode = "CW", CountryName = "Curaçao"},
new WorldCountries { CountryCode = "CY", CountryName = "Cyprus"},
new WorldCountries { CountryCode = "CZ", CountryName = "Czech Republic"},
new WorldCountries { CountryCode = "DK", CountryName = "Denmark"},
new WorldCountries { CountryCode = "DJ", CountryName = "Djibouti"},
new WorldCountries { CountryCode = "DM", CountryName = "Dominica"},
new WorldCountries { CountryCode = "DO", CountryName = "Dominican Republic"},
new WorldCountries { CountryCode = "EC", CountryName = "Ecuador"},
new WorldCountries { CountryCode = "EG", CountryName = "Egypt"},
new WorldCountries { CountryCode = "SV", CountryName = "El Salvador"},
new WorldCountries { CountryCode = "GQ", CountryName = "Equatorial Guinea"},
new WorldCountries { CountryCode = "ER", CountryName = "Eritrea"},
new WorldCountries { CountryCode = "EE", CountryName = "Estonia"},
new WorldCountries { CountryCode = "ET", CountryName = "Ethiopia"},
new WorldCountries { CountryCode = "FK", CountryName = "Falkland Islands (Malvinas)"},
new WorldCountries { CountryCode = "FO", CountryName = "Faroe Islands"},
new WorldCountries { CountryCode = "FJ", CountryName = "Fiji"},
new WorldCountries { CountryCode = "FI", CountryName = "Finland"},
new WorldCountries { CountryCode = "FR", CountryName = "France"},
new WorldCountries { CountryCode = "GF", CountryName = "French Guiana"},
new WorldCountries { CountryCode = "PF", CountryName = "French Polynesia"},
new WorldCountries { CountryCode = "TF", CountryName = "French Southern Territories"},
new WorldCountries { CountryCode = "GA", CountryName = "Gabon"},
new WorldCountries { CountryCode = "GM", CountryName = "Gambia"},
new WorldCountries { CountryCode = "GE", CountryName = "Georgia"},
new WorldCountries { CountryCode = "DE", CountryName = "Germany"},
new WorldCountries { CountryCode = "GH", CountryName = "Ghana"},
new WorldCountries { CountryCode = "GI", CountryName = "Gibraltar"},
new WorldCountries { CountryCode = "GR", CountryName = "Greece"},
new WorldCountries { CountryCode = "GL", CountryName = "Greenland"},
new WorldCountries { CountryCode = "GD", CountryName = "Grenada"},
new WorldCountries { CountryCode = "GP", CountryName = "Guadeloupe"},
new WorldCountries { CountryCode = "GU", CountryName = "Guam"},
new WorldCountries { CountryCode = "GT", CountryName = "Guatemala"},
new WorldCountries { CountryCode = "GG", CountryName = "Guernsey"},
new WorldCountries { CountryCode = "GN", CountryName = "Guinea"},
new WorldCountries { CountryCode = "GW", CountryName = "Guinea-Bissau"},
new WorldCountries { CountryCode = "GY", CountryName = "Guyana"},
new WorldCountries { CountryCode = "HT", CountryName = "Haiti"},
new WorldCountries { CountryCode = "HM", CountryName = "Heard Island and McDonald Islands"},
new WorldCountries { CountryCode = "VA", CountryName = "Holy See (Vatican City State)"},
new WorldCountries { CountryCode = "HN", CountryName = "Honduras"},
new WorldCountries { CountryCode = "HK", CountryName = "Hong Kong"},
new WorldCountries { CountryCode = "HU", CountryName = "Hungary"},
new WorldCountries { CountryCode = "IS", CountryName = "Iceland"},
new WorldCountries { CountryCode = "IN", CountryName = "India"},
new WorldCountries { CountryCode = "ID", CountryName = "Indonesia"},
new WorldCountries { CountryCode = "IR", CountryName = "Iran"},
new WorldCountries { CountryCode = "IQ", CountryName = "Iraq"},
new WorldCountries { CountryCode = "IE", CountryName = "Ireland"},
new WorldCountries { CountryCode = "IM", CountryName = "Isle of Man"},
new WorldCountries { CountryCode = "IL", CountryName = "Israel"},
new WorldCountries { CountryCode = "IT", CountryName = "Italy"},
new WorldCountries { CountryCode = "JM", CountryName = "Jamaica"},
new WorldCountries { CountryCode = "JP", CountryName = "Japan"},
new WorldCountries { CountryCode = "JE", CountryName = "Jersey"},
new WorldCountries { CountryCode = "JO", CountryName = "Jordan"},
new WorldCountries { CountryCode = "KZ", CountryName = "Kazakhstan"},
new WorldCountries { CountryCode = "KE", CountryName = "Kenya"},
new WorldCountries { CountryCode = "KI", CountryName = "Kiribati"},
new WorldCountries { CountryCode = "KP", CountryName = "Korea"},
new WorldCountries { CountryCode = "KW", CountryName = "Kuwait"},
new WorldCountries { CountryCode = "KG", CountryName = "Kyrgyzstan"},
new WorldCountries { CountryCode = "LV", CountryName = "Latvia"},
new WorldCountries { CountryCode = "LB", CountryName = "Lebanon"},
new WorldCountries { CountryCode = "LS", CountryName = "Lesotho"},
new WorldCountries { CountryCode = "LR", CountryName = "Liberia"},
new WorldCountries { CountryCode = "LY", CountryName = "Libya"},
new WorldCountries { CountryCode = "LI", CountryName = "Liechtenstein"},
new WorldCountries { CountryCode = "LT", CountryName = "Lithuania"},
new WorldCountries { CountryCode = "LU", CountryName = "Luxembourg"},
new WorldCountries { CountryCode = "MO", CountryName = "Macao"},
new WorldCountries { CountryCode = "MK", CountryName = "Macedonia"},
new WorldCountries { CountryCode = "MG", CountryName = "Madagascar"},
new WorldCountries { CountryCode = "MW", CountryName = "Malawi"},
new WorldCountries { CountryCode = "MY", CountryName = "Malaysia"},
new WorldCountries { CountryCode = "MV", CountryName = "Maldives"},
new WorldCountries { CountryCode = "ML", CountryName = "Mali"},
new WorldCountries { CountryCode = "MT", CountryName = "Malta"},
new WorldCountries { CountryCode = "MH", CountryName = "Marshall Islands"},
new WorldCountries { CountryCode = "MQ", CountryName = "Martinique"},
new WorldCountries { CountryCode = "MR", CountryName = "Mauritania"},
new WorldCountries { CountryCode = "MU", CountryName = "Mauritius"},
new WorldCountries { CountryCode = "YT", CountryName = "Mayotte"},
new WorldCountries { CountryCode = "MX", CountryName = "Mexico"},
new WorldCountries { CountryCode = "FM", CountryName = "Micronesia"},
new WorldCountries { CountryCode = "MD", CountryName = "Moldova"},
new WorldCountries { CountryCode = "MC", CountryName = "Monaco"},
new WorldCountries { CountryCode = "MN", CountryName = "Mongolia"},
new WorldCountries { CountryCode = "ME", CountryName = "Montenegro"},
new WorldCountries { CountryCode = "MS", CountryName = "Montserrat"},
new WorldCountries { CountryCode = "MA", CountryName = "Morocco"},
new WorldCountries { CountryCode = "MZ", CountryName = "Mozambique"},
new WorldCountries { CountryCode = "MM", CountryName = "Myanmar"},
new WorldCountries { CountryCode = "NA", CountryName = "Namibia"},
new WorldCountries { CountryCode = "NR", CountryName = "Nauru"},
new WorldCountries { CountryCode = "NP", CountryName = "Nepal"},
new WorldCountries { CountryCode = "NL", CountryName = "Netherlands"},
new WorldCountries { CountryCode = "NC", CountryName = "New Caledonia"},
new WorldCountries { CountryCode = "NZ", CountryName = "New Zealand"},
new WorldCountries { CountryCode = "NI", CountryName = "Nicaragua"},
new WorldCountries { CountryCode = "NE", CountryName = "Niger"},
new WorldCountries { CountryCode = "NG", CountryName = "Nigeria"},
new WorldCountries { CountryCode = "NU", CountryName = "Niue"},
new WorldCountries { CountryCode = "NF", CountryName = "Norfolk Island"},
new WorldCountries { CountryCode = "MP", CountryName = "Northern Mariana Islands"},
new WorldCountries { CountryCode = "NO", CountryName = "Norway"},
new WorldCountries { CountryCode = "OM", CountryName = "Oman"},
new WorldCountries { CountryCode = "PK", CountryName = "Pakistan"},
new WorldCountries { CountryCode = "PW", CountryName = "Palau"},
new WorldCountries { CountryCode = "PS", CountryName = "Palestine"},
new WorldCountries { CountryCode = "PA", CountryName = "Panama"},
new WorldCountries { CountryCode = "PG", CountryName = "Papua New Guinea"},
new WorldCountries { CountryCode = "PY", CountryName = "Paraguay"},
new WorldCountries { CountryCode = "PE", CountryName = "Peru"},
new WorldCountries { CountryCode = "PH", CountryName = "Philippines"},
new WorldCountries { CountryCode = "PN", CountryName = "Pitcairn"},
new WorldCountries { CountryCode = "PL", CountryName = "Poland"},
new WorldCountries { CountryCode = "PT", CountryName = "Portugal"},
new WorldCountries { CountryCode = "PR", CountryName = "Puerto Rico"},
new WorldCountries { CountryCode = "QA", CountryName = "Qatar"},
new WorldCountries { CountryCode = "RE", CountryName = "Réunion"},
new WorldCountries { CountryCode = "RO", CountryName = "Romania"},
new WorldCountries { CountryCode = "RU", CountryName = "Russian Federation"},
new WorldCountries { CountryCode = "RW", CountryName = "Rwanda"},
new WorldCountries { CountryCode = "BL", CountryName = "Saint Barthélemy"},
new WorldCountries { CountryCode = "KN", CountryName = "Saint Kitts and Nevis"},
new WorldCountries { CountryCode = "LC", CountryName = "Saint Lucia"},
new WorldCountries { CountryCode = "MF", CountryName = "Saint Martin (French part)"},
new WorldCountries { CountryCode = "PM", CountryName = "Saint Pierre and Miquelon"},
new WorldCountries { CountryCode = "VC", CountryName = "Saint Vincent and the Grenadines"},
new WorldCountries { CountryCode = "WS", CountryName = "Samoa"},
new WorldCountries { CountryCode = "SM", CountryName = "San Marino"},
new WorldCountries { CountryCode = "ST", CountryName = "Sao Tome and Principe"},
new WorldCountries { CountryCode = "SA", CountryName = "Saudi Arabia"},
new WorldCountries { CountryCode = "SN", CountryName = "Senegal"},
new WorldCountries { CountryCode = "RS", CountryName = "Serbia"},
new WorldCountries { CountryCode = "SC", CountryName = "Seychelles"},
new WorldCountries { CountryCode = "SL", CountryName = "Sierra Leone"},
new WorldCountries { CountryCode = "SG", CountryName = "Singapore"},
new WorldCountries { CountryCode = "SX", CountryName = "Sint Maarten (Dutch part)"},
new WorldCountries { CountryCode = "SK", CountryName = "Slovakia"},
new WorldCountries { CountryCode = "SI", CountryName = "Slovenia"},
new WorldCountries { CountryCode = "SB", CountryName = "Solomon Islands"},
new WorldCountries { CountryCode = "SO", CountryName = "Somalia"},
new WorldCountries { CountryCode = "ZA", CountryName = "South Africa"},
new WorldCountries { CountryCode = "GS", CountryName = "South Georgia and the South Sandwich Islands"},
new WorldCountries { CountryCode = "SS", CountryName = "South Sudan"},
new WorldCountries { CountryCode = "ES", CountryName = "Spain"},
new WorldCountries { CountryCode = "LK", CountryName = "Sri Lanka"},
new WorldCountries { CountryCode = "SD", CountryName = "Sudan"},
new WorldCountries { CountryCode = "SR", CountryName = "Suriname"},
new WorldCountries { CountryCode = "SJ", CountryName = "Svalbard and Jan Mayen"},
new WorldCountries { CountryCode = "SZ", CountryName = "Swaziland"},
new WorldCountries { CountryCode = "SE", CountryName = "Sweden"},
new WorldCountries { CountryCode = "CH", CountryName = "Switzerland"},
new WorldCountries { CountryCode = "SY", CountryName = "Syrian Arab Republic"},
new WorldCountries { CountryCode = "TW", CountryName = "Taiwan"},
new WorldCountries { CountryCode = "TJ", CountryName = "Tajikistan"},
new WorldCountries { CountryCode = "TZ", CountryName = "Tanzania"},
new WorldCountries { CountryCode = "TH", CountryName = "Thailand"},
new WorldCountries { CountryCode = "TL", CountryName = "Timor-Leste"},
new WorldCountries { CountryCode = "TG", CountryName = "Togo"},
new WorldCountries { CountryCode = "TK", CountryName = "Tokelau"},
new WorldCountries { CountryCode = "TO", CountryName = "Tonga"},
new WorldCountries { CountryCode = "TT", CountryName = "Trinidad and Tobago"},
new WorldCountries { CountryCode = "TN", CountryName = "Tunisia"},
new WorldCountries { CountryCode = "TR", CountryName = "Turkey"},
new WorldCountries { CountryCode = "TM", CountryName = "Turkmenistan"},
new WorldCountries { CountryCode = "TC", CountryName = "Turks and Caicos Islands"},
new WorldCountries { CountryCode = "TV", CountryName = "Tuvalu"},
new WorldCountries { CountryCode = "UG", CountryName = "Uganda"},
new WorldCountries { CountryCode = "UA", CountryName = "Ukraine"},
new WorldCountries { CountryCode = "AE", CountryName = "United Arab Emirates"},
new WorldCountries { CountryCode = "GB", CountryName = "United Kingdom"},
new WorldCountries { CountryCode = "US", CountryName = "United States"},
new WorldCountries { CountryCode = "UM", CountryName = "United States Minor Outlying Islands"},
new WorldCountries { CountryCode = "UY", CountryName = "Uruguay"},
new WorldCountries { CountryCode = "UZ", CountryName = "Uzbekistan"},
new WorldCountries { CountryCode = "VU", CountryName = "Vanuatu"},
new WorldCountries { CountryCode = "VE", CountryName = "Venezuela"},
new WorldCountries { CountryCode = "VN", CountryName = "Viet Nam"},
new WorldCountries { CountryCode = "VG", CountryName = "British Virgin Islands"},
new WorldCountries { CountryCode = "VI", CountryName = "US Virgin Islands"},
new WorldCountries { CountryCode = "WF", CountryName = "Wallis and Futuna"},
new WorldCountries { CountryCode = "EH", CountryName = "Western Sahara"},
new WorldCountries { CountryCode = "YE", CountryName = "Yemen"},
new WorldCountries { CountryCode = "ZM", CountryName = "Zambia"},
new WorldCountries { CountryCode = "ZW", CountryName = "Zimbabwe"},
                };
        }
    }