Overview of services running on Port 513 TCP.
~156 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	Info	OS	Devicetype	Count	Percent
fw1-rlogin	Check Point FireWall-1 authenticated RLogin server		pcm-fwc01m02			37309	23.815
no match						33638	21.472
login	Airspan MiMAX WiMAX WAP logind				WAP	32821	20.95
login						22649	14.457
tandem-print	Sharp printer tandem printing				printer	12711	8.114
fw1-rlogin	Check Point FireWall-1 authenticated RLogin server		vdk-fwg01			11099	7.085
chat	AIM or ICQ server					2168	1.384
secure-socket	CA Secure Socket Adapter					693	0.442
http	lighttpd	1.4.19				406	0.259
fw1-rlogin	Check Point FireWall-1 authenticated RLogin server		Kokomo1			385	0.246
http						331	0.211
login	OpenVMS logind			OpenVMS		232	0.148
http	Microsoft IIS httpd					188	0.12
fw1-rlogin	Check Point FireWall-1 authenticated RLogin server		piglet			151	0.096
login	Lantronix MSS100 serial interface logind	3.6			specialized	145	0.093
login	Tru64 Unix logind			Tru64 UNIX		125	0.08
http	Microsoft HTTPAPI httpd	2.0	SSDP/UPnP	Windows		103	0.066
ssh			protocol 1.5			95	0.061
fw1-rlogin	Check Point FireWall-1 authenticated RLogin server		firewall-ngx			93	0.059
login	Ataman ATRLS rlogind			Windows		87	0.056
tcpwrapped	BSD TCP Wrappers		rlogind			78	0.05
login	Siemens HiPath logind					77	0.049
telnet						58	0.037
fw1-rlogin	Check Point FireWall-1 authenticated RLogin server		avry01hkhkgfw03			54	0.034
vnc	VNC		protocol 3.8			40	0.026
arcserve	ARCserve Discovery					38	0.024
http	Boa HTTPd	0.94.14rc21				28	0.018
ftp						28	0.018
login	Digital UNIX login			Digital UNIX		22	0.014
fw1-rlogin	Check Point FireWall-1 authenticated RLogin server		abbrspo009			21	0.013