#!/usr/bin/env python3

import re
import requests

data = str()

# We download the data from IEEE
oui = requests.get("https://standards-oui.ieee.org/oui/oui.txt")
if oui.status_code != 200:
    exit(1)

# Convert to list
l = list()
line = str()
for c in oui.text:
    line += c
    if c == "\n":
        l.append(line)
        line = str()

# Remove the "header" on the file
d = l[4:]

# We get all OUI
regex = "[a-zA-Z0-9]{6}"
compiled = re.compile(regex)
for entry in d:
    s_entry = entry.split(" ")
    if compiled.match(s_entry[0]):
        print(s_entry[0])