Checks host.txt file per line to see if the host is filtered in Iran or not.

filter_check.py

import socket


file_name = 'hosts.txt'


def read_hosts(file):
    hosts = []
    with open(file, 'r') as f:
        for host in f.readlines():
            hosts.append(host.strip())

    return hosts


def check_host():
    filtered = {}
    opened = {}
    for host in read_hosts(file_name):
        try:
            ip = socket.gethostbyname(host)
            if ip.startswith('10.10.'):
                filtered[host] = ip
            else:
                opened[host] = ip
        except socket.gaierror:
            pass

    show_result(filtered, opened)


def show_result(filtered, opened):
    print('[X] Filtered hosts:')
    for host, ip in filtered.items():
        print('\t[X] {} - {}'.format(host, ip))

    print('[+] Open hosts:')
    for host, ip in opened.items():
        print('\t[+] {} - {}'.format(host, ip))


if __name__ == '__main__':
    check_host()