zhanhb / cidr-merger Goto Github PK

Over some time I have accumulated blacklists of /24 ip ranges. What I have noticed is that these blacklisted /24 are often part of bigger ranges maybe /16[1]

To keep latency down I want to have of course as less as possible entries in the blacklist. It would be nice if your tool could assist in this matter. I have been searching a bit on the internet but cannot find something useful, or the usage is not clear to me.

If you look at the list below, I could decide to keep 200 entries with 156.202 or exchange that for one 156/202.

How would I use your tool to accumulate these 200 entries[2] to only a few ranges?

[2]
35.161.1.0
35.161.10.0
35.161.100.0
35.161.101.0
35.161.102.0
35.161.103.0
35.161.105.0
35.161.106.0
35.161.107.0
35.161.108.0
35.161.109.0
35.161.11.0
35.161.110.0
35.161.111.0
35.161.112.0
35.161.113.0
35.161.114.0
35.161.115.0
35.161.117.0
35.161.118.0
35.161.119.0
35.161.12.0
35.161.120.0
35.161.121.0
35.161.122.0
35.161.123.0
35.161.124.0
35.161.125.0
35.161.126.0
35.161.127.0
35.161.128.0
35.161.129.0
35.161.13.0
35.161.131.0
35.161.132.0
35.161.133.0
35.161.135.0
35.161.137.0
35.161.139.0
35.161.14.0
35.161.140.0
..
..
35.161.76.0
35.161.77.0
35.161.80.0
35.161.81.0
35.161.82.0
35.161.83.0
35.161.84.0
35.161.85.0
35.161.86.0
35.161.87.0
35.161.88.0
35.161.89.0
35.161.9.0
35.161.90.0
35.161.91.0
35.161.92.0
35.161.93.0
35.161.95.0
35.161.96.0
35.161.97.0
35.161.98.0

[1]

[@]# grep blacklistweb ipset | cut -d' ' -f3|sort | cut -d'.' -f1,2| uniq -c | sort -n | tail -n 10
    196 34.241
    196 35.160
    197 54.70
    198 34.227
    200 156.197
    200 156.202
    203 34.242
    204 52.36
    206 34.240
    208 35.161

echo 0.0.0.0/0 | cidr-merger

expect 0.0.0.0/0, but got 0.0.0.0/00000000

Could you please create a release and upload binary files, such as: cidr-merger_linux_amd64.

Then we can get it with Nami

$ nami install github.com/zhanhb/cidr-merger