1. 获取想访问的的IP RANG(这里的RANG可以不全),这里以GITHUB为例, 得到图(1)的结果(以免DNS污染,建议使用国外DNS):
dig github.com TXT @8.8.8.8
2. 从whois.radb.net 获取组织AS NAME,或者从这个链接直接获取AS NAME[https://bgp.potaroo.net/as1221/asnames.txt]:
whois -h whois.radb.net 192.30.255.113 | grep origin
3. 从whois.radb.net 获取IP RANGE.
whois -h whois.radb.net -- '-i origin AS36459' | grep -Eo "([0-9.]+){4}/[0-9]+"
参考资料及文章:
https://qastack.cn/superuser/405666/how-to-find-out-all-ip-ranges-belonging-to-a-certain-as
https://ipinfo.io
https://www.radb.net/
https://bgp.potaroo.net/as1221/asnames.txt
根据AS NAME 获取 IP RANGE的PYTHON 脚本:
import requests
from bs4 import BeautifulSoup
import re
url_base = 'http://ipinfo.io/'
as_base = 'AS'
output = open('ip_per_asn.csv', 'w')
with open('chilean_asn.csv') as f:
lines = f.read().splitlines()
for asn in lines:
ASN = as_base + asn
page = requests.get(url_base+ASN)
html_doc = page.content
soup = BeautifulSoup(html_doc, 'html.parser')
for link in soup.find_all('a'):
if asn in link.get('href'):
auxstring = '/'+as_base+asn+'/'
line = re.sub(auxstring, '', link.get('href'))
printstring = asn+','+line+'\n'
if 'AS' not in printstring:
output.write(printstring)
print asn+'\n'
print 'script finished'
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