#!/usr/bin/python3

import json
from urllib.request import urlopen, Request


def get_ips(url="https://ipbl.paulbsd.com"):
    """get_ips fetch ips blacklists from ipbl"""
    fullurl = f"{url}/ips/last?interval=3%20h"
    req = Request(method="GET", url=fullurl)
    res = urlopen(req)
    results = json.loads(res.read())
    ips = [i["ip"] for i in results]
    if res.status == 200:
        return ips
    return None