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37 lines
987 B
Python
37 lines
987 B
Python
9 years ago
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#!/usr/bin/env python
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import math
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import netaddr
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import urllib2
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url = "http://ftp.apnic.net/apnic/stats/apnic/delegated-apnic-latest"
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data = urllib2.urlopen(url).read()
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with open("delegated-apnic-lastest", "w") as fp:
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fp.write(data)
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results = []
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with open("delegated-apnic-latest") as fp:
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for line in fp:
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# format
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# apnic|CN|ipv4|1.0.0.0|256|2012232|allocated
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l = line.strip()
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if not l:
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continue
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if l[0] == '#':
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continue
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lns = l.split("|")
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if len(lns) != 7:
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continue
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if lns[2] != 'ipv4':
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continue
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if lns[1] != 'CN':
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continue
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ip = lns[3]
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mask = 32-int(math.log(int(lns[4]), 2))
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cidr = "%s/%d" % (ip, mask)
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results.append(cidr)
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r = netaddr.cidr_merge(results)
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with open("region_cn.txt", "w") as fp:
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for a in r:
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fp.write("%s,%s,%d\n" % (a.ip,a.netmask, a.prefixlen))
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