If you are using the C# programming language and want to look up the ASN and company information of an IP address, you can use our ASN API and IP to Company Service. To get started:
Step 1: Get your access token.
Sign up for the appropriate tier and copy your IPinfo access token from your dashboard.
Step 2: Install the IPinfo C# library
Visit our official open-source IPinfo C# library GitHub repo and follow the instructions to install the library.
Step 3: IPinfo C# library ⇒ IP to Company and ASN
After importing and initializing the IPinfo package, you will need to call the following methods on the
IPResponse class variable:
IP to ASN information
| Code | Description |
|---|---|
| ipResponse.Asn.Asn | ASN of the IP address |
| ipResponse.Asn.Domain | Domain of the ASN |
| ipResponse.Asn.Name | Organization name of the ASN |
| ipResponse.Asn.Route | IP address route or network range of the ASN |
| ipResponse.Asn.Type | Type of ASN |
IP to company information
| Code | Description |
|---|---|
| ipResponse.Company.Name | Name of the company associated with the IP address |
| ipResponse.Company.Domain | Domain / Website of the company |
| ipResponse.Company.Type | Type of company/organization |
Starter code template
//namespace
using IPinfo;
using IPinfo.Models;
namespace IPinfoApp {
// Class declaration
class IPlookup {
// Main Method
static async Task Main(string[] args) {
////////////////////////////////
// initializing IPinfo client //
////////////////////////////////
// Get your IPinfo access token from: ipinfo.io/account/token
string token = "YOUR_TOKEN";
IPinfoClient client = new IPinfoClient.Builder()
.AccessToken(token)
.Build();
// making the API call
string ip = "19.12.136.0";
IPResponse ipResponse = await client.IPApi.GetDetailsAsync(ip);
////////////////////////////
// ASN / Company Insights //
////////////////////////////
// ASN Information
Console.WriteLine($"ASN: {ipResponse.Asn.Asn}");
Console.WriteLine($"ASN Domain: {ipResponse.Asn.Domain}");
Console.WriteLine($"ASN Name: {ipResponse.Asn.Name}");
Console.WriteLine($"ASN Route: {ipResponse.Asn.Route}");
Console.WriteLine($"ASN Type: {ipResponse.Asn.Type}");
// Company Information
Console.WriteLine($"Comany Name: {ipResponse.Company.Name}");
Console.WriteLine($"Comany Domain: {ipResponse.Company.Domain}");
Console.WriteLine($"Comany Type: {ipResponse.Company.Type}");
}
}
}
<br>
Result
ASN: AS3389 ASN Domain: ford.com ASN Name: Ford Motor Company ASN Route: 19.12.136.0/21 ASN Type: business Comany Name: Ford Motor Company Comany Domain: ford.com Comany Type: business<br>
Besides the API service, IPinfo’s IP to ASN data and IP to Company data is also available as a database: ASN database download & IP to Company database download.
To learn more about using the C# language and .NET framework with IPinfo, please check out our article: First steps with C#/.NET & IPinfo’s API and Database
If you have any questions, please reach out to us.