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Blacklist API Code Examples

Please read the API documentation before you start using our APIs in production.
The API key used in these examples is for demonstrative purposes and can be used only to check whoapi.com

PHP Code Example

Basic PHP example using cURL. We will get blacklist information for the domain name “whoapi.com”.

<?php
// Prepare vars
$domain    = "whoapi.com";     // domain to check
$r         = "blacklist";      // API request type
$apikey    = "demokey";        // your API key

// API call
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://api.whoapi.com/?domain=$domain&r=$r&apikey=$apikey");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$output = json_decode(curl_exec($ch), true);
curl_close($ch);

// Success
if (isset($output['status']) && $output['status'] == 0) {
    echo "Success. Domain \"$domain\" is: ".(!empty($output['blacklisted']) ? "Blacklisted" : "Not blacklisted");
    
// API error
} elseif (!empty($output['status_desc'])) {
    echo "API reports error: ".$output['status_desc'];
    
// Unknown error
} else {
    echo "Unknown error";
}
?>

Javascript Code Example

We will get blacklist information for the domain name “whoapi.com”.

<script type="text/javascript">
var domain     = "whoapi.com";      // domain name you want to check
var r          = "blacklist";       // API request type
var apikey     = "demokey";         // your API key

var xhr = new XMLHttpRequest();
xhr.open("GET", 'https://api.whoapi.com/?domain='+domain+'&r='+r+'&apikey='+apikey, true);
xhr.onreadystatechange = function () {
    if (xhr.readyState === 4 && xhr.status === 200) {
        var json = JSON.parse(xhr.responseText);
        if (json.status == 0) {
            document.getElementById("result").innerHTML = "Success. Domain is: " + (json.blacklisted ? "Blacklisted" : "Not blacklisted");
        } else {
            document.getElementById("result").innerHTML = "API reports error: " + json.status_desc;
        }
    } else {
        document.getElementById("result").innerHTML = "Unknown error";
    }
};
xhr.send();
</script>
<div id="result">please wait...</div>

Ruby Code Example

We will get blacklist information for the domain name “whoapi.com”.

require 'open-uri'
require 'json'

domain     = "whoapi.com"   # domain to check
r          = "blacklist"    # API request type
apikey     = "demokey"      # your API key

output = JSON.parse(URI.open("https://api.whoapi.com/?domain=#{domain}&r=#{r}&apikey=#{apikey}").read)

if output["status"].to_i == 0
 puts "Success. Domain is: " + (output["blacklisted"].to_i == 1 ? "Blacklisted" : "Not blacklisted")
elsif !output["status_desc"].nil?
 puts "API reports error: " + output["status_desc"]
else
 puts "Unknown error"
end

Python Code Example

We will get blacklist information for the domain name “whoapi.com”.

#!/usr/bin/env python
import requests


def whoapi_request(domain, r, apikey) -> None:

    res = requests.get('https://api.whoapi.com', dict(
        domain=domain,
        r=r,
        apikey=apikey))

    if res.status_code == 200:
        data = res.json()
        if int(data['status']) == 0:
            print("Success. Domain is: " + "Blacklisted" if int(data['blacklisted']) == 1 else "Not blacklisted")
        else:
            print("API reports error: " + data['status_desc'])
    else:
        raise Exception('Unexpected status code %d' % res.status_code)


domain = 'whoapi.com'   # domain to check
r = 'blacklist'         # API request type
apikey = 'demokey'      # key

whoapi_request(domain, r, apikey)

Objective C Code Example

We will get blacklist information for the domain name “whoapi.com”.

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[]) {
    NSString *domain   = @"whoapi.com";     // domain to check
    NSString *r        = @"blacklist";      // API request type
    NSString *apikey   = @"demokey";        // your API key
    
    NSString *urlAsString = [NSString stringWithFormat:@
    "https://api.whoapi.com/?domain=%@&r=%@&apikey=%@", domain, r, apikey];
    
    NSMutableURLRequest *urlRequest = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:urlAsString]];
    [urlRequest setHTTPMethod:@"GET"];
    NSURLSession *session = [NSURLSession sharedSession];
    
    // Semaphore used only for the debug purpose
    dispatch_semaphore_t sema = dispatch_semaphore_create(0);
    
    NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:urlRequest completionHandler:^(NSData *data, NSURLResponse *response, NSError *error)
    {
        NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response;
        if(httpResponse.statusCode == 200)
        {
            NSError *parseError = nil;
            NSDictionary *responseDictionary = [NSJSONSerialization JSONObjectWithData:data options:0 error:&parseError];
            
            NSNumber *status;
            if([responseDictionary[@"status"] isKindOfClass:[NSString class]]) {
                NSNumberFormatter *f = [[NSNumberFormatter alloc] init];
                f.numberStyle = NSNumberFormatterDecimalStyle;
                status = [f numberFromString:responseDictionary[@"status"]];
            } else {
                status = responseDictionary[@"status"];
            }
            if([status isEqualToNumber:@0])
            {
                if([responseDictionary[@"blacklisted"] isEqualToString:@"1"])
                {
                    NSLog(@"Success. Domain is: Blacklisted\n");
                } else {
                    NSLog(@"Success. Domain is: Not blacklisted\n");
                }
            } else {
                NSLog(@"API reports error: %@", responseDictionary[@"status_desc"]);
            }
        }
        else
        {
            NSLog(@"Unexpected status code\n");
        }
        
        // Semaphore used only for the debug purpose
        dispatch_semaphore_signal(sema);
    }];
    [dataTask resume];
    
    // Semaphore used only for the debug purpose
    dispatch_semaphore_wait(sema, DISPATCH_TIME_FOREVER);
    
    return 0;
}

C#(.NET) Code Example

We will get blacklist information for the domain name “whoapi.com”.

using Newtonsoft.Json.Linq;
using System;
using System.IO;
using System.Net;

public class Program
{
    public static void Main()
    {
        string apiType = "blacklist"; // API request type
        string domain = "whoapi.com"; // domain to check
        string apiKey = "demokey"; // api key

        WebRequest request = WebRequest.Create(String.Format("https://api.whoapi.com/?domain={0}&r={1}&apikey={2}", domain, apiType, apiKey));
        WebResponse response = request.GetResponse();

        StreamReader reader = new StreamReader(response.GetResponseStream());
        string responseFromServer = reader.ReadToEnd();

        JObject json = JObject.Parse(responseFromServer);

        if (json.Value<int>("status") == 0)
        {
            if (json.Value<int>("blacklisted") == 1)
            {
                Console.WriteLine("Success. Domain is: Blacklisted");
            }
            else
            {
                Console.WriteLine("Success. Domain is: Not blacklisted");
            }
        }
        else
        {
            Console.WriteLine(String.Format("API reports error: {0}. ", json["status_desc"]));
        }
    }
}

Java Code Example

We will get blacklist information for the domain name “whoapi.com”.

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import org.json.JSONObject;

class Main {
    public static void main(String args[]) {
      try {
        // Set data
        String domain = "whoapi.com"; // domain to check
        String rtype = "blacklist"; // API request type
        String apikey = "demokey"; // your API key

        // Send request to API
        URL obj = new URL("https://api.whoapi.com/?domain=" + domain + "&r=" + rtype + "&apikey=" + apikey);
        HttpURLConnection con = (HttpURLConnection) obj.openConnection();
        
        // Validate HTTP response code
        int responseCode = con.getResponseCode();
        if (responseCode != 200) {
          System.out.println("HTTP request error, code: " + responseCode);
          return;
        }
        
        // Read API reply
        BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
        String inputLine;
        StringBuffer response = new StringBuffer();
        while ((inputLine = in.readLine()) != null) {
          response.append(inputLine);
        }
        in.close();
        
        // Get JSON
        JSONObject myResponse = new JSONObject(response.toString());
        int status = myResponse.getInt("status");
        String statusDesc = myResponse.getString("status_desc");
        
        // Validate request status
        if (status != 0) {
          System.out.println("API reports error: " + statusDesc);
          return;
        }

        int blacklisted = myResponse.getInt("blacklisted");
        System.out.println("Success. Domain is: " + (blacklisted == 1 ? "Blacklisted" : "Not blacklisted"));

      } catch (Exception e) {
          e.printStackTrace();
      }
    }
}

Summary

The provided code examples demonstrate how to make API requests to the WhoAPI service to check if a domain is blacklisted using different programming languages. The code examples use various HTTP client libraries (such as cURL, XMLHttpRequest, open-uri, requests, etc.) to send HTTP GET requests to the WhoAPI Blacklist API endpoint.

The general flow of the code is as follows:

  1. It sets up the necessary variables, including the domain name to check, the API request type (blacklist), and the API key.
  2. It constructs the API request URL with the appropriate parameters.
  3. It sends an HTTP GET request to the API endpoint using the provided HTTP client library.
  4. It receives the API response and processes it.
  5. It handles different scenarios based on the response status.

For example, if the response status is 0, indicating success, the code may display a success message indicating whether the domain is blacklisted or not. If the response status is non-zero, indicating an error, the code may display an error message with the corresponding status description.

It’s important to review the API documentation provided by WhoAPI to understand the available request types, response formats, and any specific requirements or limitations of the API.

Please note that the provided code snippets assume the availability of the WhoAPI service and may require modifications to the API endpoint or authentication mechanism if there are any changes to the service. It’s also important to use a valid API key provided by WhoAPI to authenticate the requests properly.