WhatsApp Inc. IP addresses

fetch.py

import lxml.html
import requests
import re, operator

def extract_page_ips(response):
    tree = lxml.html.fromstring(response.text)
    content = tree.xpath('//div[@id="border-wrapper"]')[0]
    expr = re.compile("/ip/[0-9.]*")
    hrefs = map(lambda x: x[2], content.iterlinks())
    ip_links = filter(expr.match, hrefs)
    gsplit = lambda x : x.replace("/ip/", "")
    ips = map(gsplit, ip_links)
    return list(ips)

def extract_ips(org):
    code = requests.codes.ok
    page = 0
    ips = []
    while code == requests.codes.ok:
        page = page + 1
        link = "https://ipdb.at/org/%s?page=%s"%(org, page)
        response = requests.get(link, allow_redirects=False)
        code = response.status_code
        if (code == requests.codes.ok):
            ips = ips + extract_page_ips(response)
    return ips

def val(x):
    s = list(map(int, x.split('.')))
    s.reverse()
    t = [ 1000**i for i in range(0, len(s))]
    return sum(list(map(operator.mul, t, s)))

ips = extract_ips("WhatsApp_Inc")
sips = sorted(ips, key=val)
with open("ips.txt", "w") as f:
    for i in sips:
        f.write(i+'\n')