Overview of services running on Port 256 TCP.
~12 Thousand IP addresses observed from May to December 2012
To get raw lists of the data go to Download. For an explanation of what this data is and how it was obtained, see Paper.

Servicename Product Version Count Percent
sshDropbear sshd0.51548845.359
no match-/--/-180614.927
chatAIM or ICQ server146812.133
fw1-topologyCheckpoint FireWall-1 Topology140111.579
httplighttpd1.4.193803.141
http3232.67
httpMicrosoft IIS httpd1611.331
fw1-secureremoteCheckpoint Firewall1 SecureRemote1361.124
httpMicrosoft HTTPAPI httpd2.01090.901
ssh940.777
telnet470.388
sshOpenSSH4.3450.372
vncVNC360.298
arcserveARCserve Discovery310.256
httpBoa HTTPd0.94.14rc21300.248
ftp290.24
httpMiniServ1.580200.165
sshMikroTik RouterOS sshd180.149
ftpvsftpd2.3.5170.141
ftpMicrosoft ftpd170.141
sshOpenSSH5.5p1 Debian 6+squeeze2150.124