Overview of services running on Port 523 TCP.
~29 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 InfoOSDevicetypeCount Percent
telnetUSRobotics/Sagem router telnetdrouter1066636.307
telnetNetgear broadband router or ZyXel VoIP adapter telnetd962332.757
chatAIM or ICQ server21937.465
no match16425.589
httplighttpd1.4.194071.385
socks53691.256
ibm-db2IBM DB2 Database Server9.07.23691.256
http3551.208
ibm-db2IBM DB2 Database Server9.07.02520.858
ibm-db2IBM DB2 Database Server9.07.52460.837
ibm-db2IBM DB2 Database Server9.01.22190.745
httpMicrosoft IIS httpd1980.674
ibm-db2IBM DB2 Database Server9.07.41810.616
ibm-db2IBM DB2 Database Server9.01.01730.589
ibm-db2IBM DB2 Database Server9.07.11710.582
ibm-db2IBM DB2 Database Server9.05.01670.568
httpMicrosoft HTTPAPI httpd2.0SSDP/UPnPWindows1340.456
ibm-db2IBM DB2 Database Server8.02.01320.449
ibm-db2IBM DB2 Database Server9.07.31300.443
sshprotocol 1.5940.32
httpthttpd2.24780.266
ibm-db2IBM DB2 Database Server9.05.2620.211
telnet610.208
ibm-db2IBM DB2 Database Server8.02.3480.163
httpBoa HTTPd0.94.14rc21440.15
arcserveARCserve Discovery430.146
ibm-db2IBM DB2 Database Server8.02.9410.14
vncVNCprotocol 3.8400.136
ibm-db2IBM DB2 Database Server9.01.4380.129
ibm-db2IBM DB2 Database Server8.01.6360.123
ibm-db2IBM DB2 Database Server9.05.4350.119
ibm-db2IBM DB2 Database Server9.01.3350.119
ibm-db2IBM DB2 Database Server8.02.7290.099
ibm-db2IBM DB2 Database Server8.02.5290.099
httpthttpd2.25b280.095
ibm-db2IBM DB2 Database Server8.02.4270.092
ibm-db2IBM DB2 Database Server9.05.3260.089
ftp260.089
ftpMicrosoft ftpdWindows250.085
ibm-db2IBM DB2 Database Server8.02.8220.075
sshOpenSSH4.3protocol 2.0210.071