This script performs bulk reverse WHOIS lookups using the WhoisFreaks API to retrieve domain registration details for a list of companies, saving the results in a JSON file while implementing rate limiting to avoid API restrictions.

whoisfreaks-reverse-whois.py

import requests
import json
import time

# Configuration
API_KEY = "API_KEY"  # Replace with your actual API key
INPUT_FILE = "companies.txt"  # File containing company names (one per line)
OUTPUT_FILE = "output2.json"  # JSON output file
RATE_LIMIT_SECONDS = 60  # Wait time between requests to avoid rate limiting

# Function to query WhoisFreaks API
def get_whois_data(company_name):
    url = f"https://api.whoisfreaks.com/v1.0/whois?apiKey={API_KEY}&whois=reverse&company={company_name}"
    response = requests.get(url)
    if response.status_code == 200:
        return response.json()
    else:
        return {"error": f"Failed to fetch data for {company_name}", "status_code": response.status_code}

# Read company names from file
with open(INPUT_FILE, "r") as file:
    companies = [line.strip() for line in file if line.strip()]

# Query API for each company and store results
results = {}
for company in companies:
    results[company] = get_whois_data(company)
    print(f"Processed: {company}, waiting {RATE_LIMIT_SECONDS} seconds before next request...")
    time.sleep(RATE_LIMIT_SECONDS)  # Wait to avoid rate limiting

# Save results to JSON file
with open(OUTPUT_FILE, "w") as json_file:
    json.dump(results, json_file, indent=4)

print(f"Whois data saved to {OUTPUT_FILE}")