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“Active” ISP Survey Results (Summary)
Total non-1918 routers probed: 115,466
BGP Speakers
SYN-ACK - 4,602
RST - 3,088
No Response - 107,777
BGP Open Test Results
OPEN / NOTIFICATION - 1,666
AUTH FAIL - 1635
CEASE - 11
BAD AS - 20
NOTIFICATION ONLY - 84
AUTH FAIL - 1
CEASE - 83
RST - 264
Connect (No Data) - 2,147
SSH daemons: 6,349
Telnet daemons: 10,907
HTTP Servers: 5,565
16,815 routers were reachable* on at least one admin interface (14.5% of probed routers)

*Based only on receipt of SYN-ACK, so daemons that you can actually connect() to could be lower!
PPT Version