指定地域のIPアドレス割り振り・割り当て一覧を作るスクリプト

ipbycc.py

from netaddr import IPSet, IPRange, IPAddress
import requests

import time

rirs = (
    'http://ftp.arin.net/pub/stats/arin/delegated-arin-extended-latest',
    'http://ftp.ripe.net/pub/stats/ripencc/delegated-ripencc-extended-latest',
    'http://ftp.apnic.net/pub/stats/apnic/delegated-apnic-extended-latest',
    'http://ftp.lacnic.net/pub/stats/lacnic/delegated-lacnic-extended-latest',
    'http://ftp.afrinic.net/pub/stats/afrinic/delegated-afrinic-extended-latest',
)


def loadDelegate(uri: str, cc: str) -> (list, list):
    res = requests.get(uri)

    if res.status_code != 200:
        return None

    v4list = list()
    v6list = list()

    # https://www.apnic.net/about-apnic/corporate-documents/documents/resource-guidelines/rir-statistics-exchange-format/#RecordFormat
    for line in res.text.splitlines():

        if line.startswith('#'):
            continue

        params = line.split('|')

        if params[1] != cc:
            continue

        if params[2] == 'ipv4':
            width = int(params[4])
            from_ip = IPAddress(params[3], version=4)
            to_ip = IPAddress(int(from_ip) + width - 1)
            v4list.extend(IPRange(params[3], to_ip).cidrs())

        elif params[2] == 'ipv6':
            v6list.append(params[3]+'/'+params[4])

    return (v4list, v6list)


if __name__ == '__main__':
    start = time.time()
    cc = 'JP'

    v4list = list()
    v6list = list()
    for rir in rirs:
        (v4, v6) = loadDelegate(rir, cc)
        v4list.extend(v4)
        v6list.extend(v6)

    v4set = IPSet(v4list)
    v6set = IPSet(v6list)

    print("Elapsed {0} secs".format(time.time() - start))

    with open('./v4{}.txt'.format(cc), mode='w') as f:
        for cidr in v4set.iter_cidrs():
            f.write(str(cidr)+"\n")

    with open('./v6{}.txt'.format(cc), mode='w') as f:
        for cidr in v6set.iter_cidrs():
            f.write(str(cidr)+"\n")