Domain name check

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This is a little script to check if domain names are available
Its kinda bad and not always correct
I made it in like 10mins to find a domain
but its quick and automatic

Code:

import requests
import time
from sys import argv

class bcolors:
    HEADER = '\033[95m'
    OKBLUE = '\033[94m'
    OKGREEN = '\033[92m'
    WARNING = '\033[93m'
    FAIL = '\033[91m'
    ENDC = '\033[0m'
    BOLD = '\033[1m'
    UNDERLINE = '\033[4m'


url = "https://www.namecheap.com/domains/whoislookup-api/{domain}.{tld}"

if len(argv) < 2:
    print("Missing name")
    time.sleep(5)
    exit()

start = argv[1]

for tmptld in open('TLDS.txt').readlines():

    tld = tmptld.lower().rstrip()
    check = requests.get(url.format(domain=start, tld=tld))
    if "Domain Name:" in check.text:
        print(bcolors.FAIL + "Domain: " + start + "." + tld + " unavailable" + bcolors.ENDC)
    elif "The queried object does not exist: " in check.text:
        print(bcolors.OKGREEN + "Domain: " + start + "." + tld + " available" + bcolors.ENDC)
    elif "Error code: 01044" in check.text:
        print("Illegal lookup")
    elif "Cannot resolve registry by tld:" in check.text:
        print("Bad TLD: " + tld)
    else:
        print("Failed to check: " + start + "." + tld)

use python 3.6 or above

Code:

python domain.py thestartofthedomain

I have found some nice domains with it