数据中心 IP 检查：如何判断一个 IP 是不是数据中心 IP

"""Who holds this IP? Public, keyless sources only: RDAP, RIPEstat, PeeringDB."""
import json
import socket
import sys
import urllib.request

HEADERS = {'Accept': 'application/json', 'User-Agent': 'datacenter-ip-check/1.0'}


def get_json(url):
    request = urllib.request.Request(url, headers=HEADERS)
    with urllib.request.urlopen(request, timeout=20) as response:
        return json.load(response)


def vcard_name(entity):
    # RDAP contacts are jCards: ['vcard', [['fn', {}, 'text', 'Name'], ...]]
    for field in entity.get('vcardArray', ['vcard', []])[1]:
        if field[0] == 'fn':
            return field[3]
    return ''


def check_ip(ip):
    rdap = get_json('https://rdap.org/ip/' + ip)
    print('Network name :', rdap.get('name'))
    print('Range        :', rdap.get('startAddress'), '-', rdap.get('endAddress'))
    print('Country      :', rdap.get('country', 'not given'))
    for entity in rdap.get('entities', []):
        if 'registrant' in entity.get('roles', []):
            print('Holder       :', vcard_name(entity))

    try:
        print('Reverse DNS  :', socket.gethostbyaddr(ip)[0])
    except OSError:
        print('Reverse DNS  : none')

    info = get_json('https://stat.ripe.net/data/network-info/data.json?resource=' + ip)['data']
    print('BGP prefix   :', info.get('prefix') or 'not announced')
    for asn in info.get('asns', []):
        nets = get_json('https://www.peeringdb.com/api/net?asn=' + asn)['data']
        kind = ', '.join(nets[0].get('info_types') or []) if nets else 'no PeeringDB record'
        print('ASN          : AS' + asn, '-', nets[0]['name'] if nets else '', '-', kind)


if __name__ == '__main__':
    check_ip(sys.argv[1] if len(sys.argv) > 1 else '1.1.1.1')

Network name : APNIC-LABS
Range        : 1.1.1.0 - 1.1.1.255
Country      : AU
Holder       : APNIC Research and Development
Reverse DNS  : one.one.one.one
BGP prefix   : 1.1.1.0/24
ASN          : AS13335 - Cloudflare - Content