# known IPs of any DNS located in China:
china = {
    "1.1.8.8",
    "1.1.8.9",
    "1.2.4.8",
    "1.8.1.8",
    "1.8.8.8",
    "114.254.201.131",
    "218.107.55.108",
    "222.216.2.236",
}

# known IPs (not servers) that are used to deny access to websites:
blocks = {
    "1.2.3.4",          # timeout
    "54.242.237.204",   # fake
    "93.158.134.250",   # fake
    "114.6.128.8",      # fake
    "118.97.116.27",    # fake
    "119.235.29.59",    # fake
    "124.40.255.99",    # fake
    "146.112.61.106",   # fake
    "156.154.113.17",   # fake
    "156.154.175.30",   # fake
    "156.154.175.215",  # fake
    "156.154.175.216",  # fake
    "156.154.175.221",  # fake
    "163.28.10.160",    # fake
    "175.139.142.25",   # fake
    "176.103.130.135",  # fake
    "182.93.64.126",    # fake
    "192.99.140.48",    # fake
    "195.175.254.2",    # fake
    "202.40.187.91",    # fake
    "202.162.209.133",  # fake
    "202.165.36.253",   # fake
    "203.119.13.75",    # fake
    "203.119.13.76",    # fake
    "203.190.55.217",   # fake
}

bogon_checks = [
    "0.",
    "10.",
    "127.",
    "169.254.",
    "192.0.0.",
    "192.0.2.",
    "192.168.",
    "198.18.",
    "198.19.",
    "198.51.100.",
    "203.0.113.",
] + [
    "100.{}.".format(i) for i in range(64, 128)
] + [
    "172.{}.".format(i) for i in range(16, 32)
] + [
    "{}.".format(i) for i in range(224, 256)
]

def is_bogon(ip):
    return any(ip.startswith(check) for check in bogon_checks)