= 2012 Internet Census icmp_ping
Let's check relevancy of known hits:
``
grep -e '208.254.40' -e '208.254.42' 208 | tee 208hits
``
Output:
``
208.254.40.95 1355564700 unreachable
208.254.40.95 1355622300 unreachable
208.254.40.96 1334537100 alive, 36342
208.254.40.96 1335269700 alive, 17586
..
208.254.40.127 1355562900 alive, 35023
208.254.40.127 1355593500 alive, 59866
208.254.40.128 1334609100 unreachable
208.254.40.128 1334708100 alive from 208.254.32.214, 43358
208.254.40.128 1336596300 unreachable
``
The rest of 208 is mostly unreachable.
``
208.254.42.191 1335294900 unreachable
...
208.254.42.191 1344737700 unreachable
208.254.42.191 1345574700 Icmp Error: 0,ICMP Network Unreachable, from 63.111.123.26
208.254.42.191 1346166900 unreachable
...
208.254.42.191 1355665500 unreachable
208.254.42.192 1334625300 alive, 6672
...
208.254.42.192 1355658300 alive, 57412
208.254.42.193 1334677500 alive, 28985
208.254.42.193 1336524300 unreachable
208.254.42.193 1344447900 alive, 8934
208.254.42.193 1344613500 alive, 24037
208.254.42.193 1344806100 alive, 20410
208.254.42.193 1345162500 alive, 10177
...
208.254.42.223 1336590900 alive, 23284
...
208.254.42.223 1355555700 alive, 58841
208.254.42.224 1334607300 Icmp Type: 11,ICMP Time Exceeded, from 65.214.56.142
208.254.42.224 1334681100 Icmp Type: 11,ICMP Time Exceeded, from 65.214.56.142
208.254.42.224 1336563900 Icmp Type: 11,ICMP Time Exceeded, from 65.214.56.142
208.254.42.224 1344451500 Icmp Type: 11,ICMP Time Exceeded, from 65.214.56.138
208.254.42.224 1344566700 unreachable
208.254.42.224 1344762900 unreachable
``
Let's try with 66. First there way too much data, 9 GB, let's cut it down:
``
n=66
time awk '$3~/^alive,/ { print $1 }' $n | uniq -c | sed -r 's/^ +//;s/ /,/' | tee $n-up-uniq-c
``
OK down to 45 MB, now we can work.
``
grep -e '66.45.179' -e '66.104.169' -e '66.104.173' -e '66.104.175' -e '66.175.106' '66-alive-uniq-c' | tee 66hits
``
Nah, it's full of holes:
``
4,66.45.179.187
12,66.45.179.188
2,66.45.179.197
1,66.45.179.202
2,66.45.179.205
2,66.45.179.206
1,66.45.179.207
``
won't be able to find new ranges here.
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