Take a file called ips.txt and sort them by their PTR records

sort-ip.py

import socket

def get_hosting_platform(ip):
    try:
        reverse_dns = socket.gethostbyaddr(ip)[0]
        if "amazon" in reverse_dns:
            return "amazon"
        elif "google" in reverse_dns:
            return "google"
        elif "azure" in reverse_dns:
            return "azure"
        elif "oracle" in reverse_dns:
            return "oracle"
        elif "ibm" in reverse_dns:
            return "ibm"
        else:
            return reverse_dns
    except:
        return "other"

def write_to_file(file_name, ip):
    with open(file_name, "a") as file:
        file.write(ip)
        file.write("\n")

def check_ips_from_file(file_name):
    with open(file_name, "r") as file:
        ips = file.readlines()
        for ip in ips:
            ip = ip.strip()
            platform = get_hosting_platform(ip)
            if platform == "amazon":
                write_to_file("amazon.txt", ip)
                print(f"{ip} is hosted on Amazon.")
            elif platform == "google":
                write_to_file("gcp.txt", ip)
                print(f"{ip} is hosted on Google.")
            elif platform == "azure":
                write_to_file("azure.txt", ip)
                print(f"{ip} is hosted on Azure.")
            elif platform == "oracle":
                write_to_file("oracle.txt", ip)
                print(f"{ip} is hosted on oracle.")
            elif platform == "oracle":
                write_to_file("oracle.txt", ip)
                print(f"{ip} is hosted on oracle.")
            else:
                write_to_file("other.txt", ""+ip+":"+platform+"")
                print(f"{ip} is hosted on other platform.")

# Read IP addresses from the file and check them
check_ips_from_file("ips.txt")