C# guide

Use FindIP with C# and .NET

Use HttpClient and System.Text.Json to read geolocation and IP intelligence without third-party JSON packages.

Endpoint

Authenticated IP lookup

GET https://api.findip.net/{ip}/?token={token}

Status handlingCheck success before reading the JSON body.

Risk fieldsRead intelligence.risk.score and level for compact decisions.

Response guideView the full response model

.NET example

Works in modern .NET console, worker, and web apps.

using System.Text.Json;

var ip = "8.8.8.8";
var token = "YOUR_API_KEY";

using var client = new HttpClient { Timeout = TimeSpan.FromSeconds(10) };
var uri = $"https://api.findip.net/{ip}/?token={Uri.EscapeDataString(token)}&returnIp=true";

using var response = await client.GetAsync(uri);
response.EnsureSuccessStatusCode();

using var stream = await response.Content.ReadAsStreamAsync();
using var doc = await JsonDocument.ParseAsync(stream);
var root = doc.RootElement;
var intelligence = root.GetProperty("intelligence");

Console.WriteLine($"City: {root.GetProperty("city").GetProperty("names").GetProperty("en").GetString()}");
Console.WriteLine($"Country: {root.GetProperty("country").GetProperty("names").GetProperty("en").GetString()}");
Console.WriteLine($"ISP: {root.GetProperty("traits").GetProperty("isp").GetString()}");
Console.WriteLine($"ASN: {root.GetProperty("traits").GetProperty("autonomous_system_number").GetInt32()}");

Console.WriteLine($"Verdict: {intelligence.GetProperty("summary").GetProperty("verdict").GetString()}");
Console.WriteLine($"Risk: {intelligence.GetProperty("risk").GetProperty("score").GetInt32()} {intelligence.GetProperty("risk").GetProperty("level").GetString()}");
Console.WriteLine($"VPN: {intelligence.GetProperty("flags").GetProperty("is_vpn").GetBoolean()}");
Console.WriteLine($"Proxy: {intelligence.GetProperty("flags").GetProperty("is_proxy").GetBoolean()}");
Console.WriteLine($"Tor: {intelligence.GetProperty("flags").GetProperty("is_tor").GetBoolean()}");