#!/usr/bin/env python import requests import sys subdomains = [] with open ("/home/whackx/Downloads/wordlist2.txt", 'r') as _f: subdomains = _f.read().splitlines() for sub in subdomains: http_domain = f"http://{sub}.{sys.argv[1]}" try: requests.get(http_domain) except requests.ConnectionError: pass else: print("Valid domain: ", http_domain)