SF_11.1, SF_11.2, SF_12.0, SF_12.1, SF_12.2, SF_13.0, SF_13.1, SF_13.2, SF_13.3, SF_14.0, SF_14.1, SF_14.2, SF_14.3 - https://docs.sitefinity.com/for-developers-personalization/for-developers-work-with-sitefinity-cms-personalization-geolocation-api

FindLocationByIP_IpCityLocationService.cs

using System.Net;
using Telerik.Sitefinity.Personalization.Impl.GeoData;

namespace Sitefinity.Documentation.GeoLocation.Samples
{
    public class GeoLocationSamples
    {
        public CityLocation FindLocation(string ipAddressString)
        {
            IPAddress ip = null;
            IPAddress.TryParse(ipAddressString, out ip);
            var lookupService = new IpCityLocationService();
            if (lookupService.IsReady)
                return lookupService.GetLocation(ip);
            else return null;
        }

        public static void GetCityLocationProperties(CityLocation location)
        {
            var city = location?.City;
            var country = location?.Country;
            var region = location?.Region;
        }
    }
}