How to use the IP Address Details API in C#

Find geolocation with ip address. This guide calls it from C# with code we've run against the live endpoint.

Online · 505 msEndpoint tested Oct 24, 2026

1. What you need

.NET 6 or newer. Paste into a top-level `Program.cs` and run `dotnet run`.

No API key or sign-up. Endpoint: https://ipinfo.io/

2. Make the request

using System.Net.Http;

using var http = new HttpClient { Timeout = TimeSpan.FromSeconds(10) };
var json = await http.GetStringAsync("https://ipinfo.io/");
Console.WriteLine(json);

3. The response

Trimmed from the live response on Oct 24, 2026.

JSON

{
  "ip": "154.160.17.164",
  "hostname": "dyn-at-mobile-154-160-17-164.mtn.com.gh",
  "city": "Accra",
  "region": "Greater Accra",
  "country": "GH",
  "loc": "5.5560,-0.1969",
  "org": "AS30986 Scancom Limited",
  "timezone": "Africa/Accra",
  "readme": "https://ipinfo.io/missingauth"
}

4. Before you ship

Set a timeout and handle non-200 responses: free APIs can rate-limit or go down.
Cache responses where you can, instead of calling the API on every page view.
Read the official documentation ↗ for rate limits and terms of use.

FAQ

Does the IP Address Details API need an API key in C#?

No. The IP Address Details API works without an API key, so the C# example runs as-is.

Can I call the IP Address Details API from the browser?

Yes. It sends CORS headers, so front-end JavaScript can call it directly.

What does the IP Address Details API return?

JSON. The example response on this page is trimmed from a real response our health check received on Oct 24, 2026.

Same API in: Python · JavaScript · Node.js · PHP · Java · Go · Ruby
IP Address Details API: ratings & reviews · IP Address Details API alternatives · more free APIs for C#