Overview of services running on Port 515 TCP.
~547 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
printer			319978	58.397
printer	Panasonic mfpscdl.exe service		82252	15.011
no match	-/-	-/-	34905	6.37
printer	Microsoft lpd		32818	5.989
printer	lpd		31010	5.659
http			11440	2.088
printer	Lexmark lpd service		8952	1.634
printer	LPRng		4266	0.779
http	SonicWALL		4033	0.736
chat	AIM or ICQ server		2634	0.481
printer	Solaris lpd		1920	0.35
ipp	CUPS		1297	0.237
printer	Sun Solaris lpd		946	0.173
http	Apache	2.2.8	728	0.133
http	AIM	1.0	714	0.13
ssl	SSLv3		710	0.13
printer	print server		626	0.114
printer	Linux lpd		452	0.082
http	lighttpd	1.4.19	434	0.079
http	lighttpd	1.4.29	432	0.079
ssh	SCS sshd	3.0.1	419	0.076
printer	BSD lpd		406	0.074
http	mini_httpd	1.19 19dec2003	295	0.054
ssh	OpenSSH	5.8p2_hpn13v11	257	0.047
http	Microsoft IIS httpd		239	0.044
hp-radia	HP Radia configuration server		196	0.036
http	thttpd	2.24	177	0.032
http	Microsoft HTTPAPI httpd	2.0	175	0.032
printer	lpsched		167	0.03
http	GoAhead-Webs httpd		154	0.028
http	Apache	1.3.6	149	0.027
napster	WinMX or Lopster Napster P2P client		145	0.026
http	a_63		140	0.026
printer	Wyse Winterm 1200 LE terminal lpd		138	0.025
ssh	Dropbear sshd	0.48	130	0.024
http	Apache Tomcat/Coyote JSP engine	1.1	126	0.023
printer	AIX lpd		124	0.023
printer	BSD/Linux lpd		123	0.022
http	DrcomServer1.0		121	0.022
vnc	VNC		120	0.022
http	Apache		114	0.021
http	Netwave IP camera http config		112	0.02
http	Avtech AVN801 network camera	1.0	108	0.02
ssh			107	0.02
arcserve	ARCserve Discovery		106	0.019
printer	RPM Print Manager lpd		101	0.018
http	Hikvision-Webs		81	0.015
http	Boa HTTPd	0.94.14rc21	76	0.014
http-proxy	Squid http proxy	2.6.STABLE12	71	0.013
http	PDR-M800	1.0	63	0.011
telnet			62	0.011
http	Microsoft IIS httpd	6.0	48	0.009
http	Apache	2.2.3	48	0.009
ssh	OpenSSH	4.3	47	0.009
audioworks	AudioWorks sound server		47	0.009
http	Apache	2.2.22	44	0.008
http	thttpd	2.25b	43	0.008
http	Apache	2.2.14	43	0.008
http	thttpd		42	0.008
niprint	Network Instruments NIPrint network analyzer		40	0.007
directconnect	Direct Connect P2P		35	0.006
http	thttpd	2.24 26oct2003	34	0.006
zabbix	Zabbix Monitoring System		33	0.006
ftp	Microsoft ftpd		31	0.006
http	Gadspot/Avtech AV787 webcam http config		29	0.005
ftp			29	0.005
http	Apache	2.2.16	28	0.005
http	uc-httpd	1.0.0	27	0.005
http	Mbedthis-Appweb	2.0.4	27	0.005
http-proxy	Squid http proxy	2.7.STABLE9	26	0.005
http	uTorrent WebUI		24	0.004
vnc	RealVNC Enterprise		23	0.004
smtp			23	0.004
psql	Pervasive.SQL Server - Relational Engine		23	0.004
http	GeoVision GeoHttpServer for webcams		23	0.004
http	Apache	2.2.15	22	0.004
vnc	RealVNC Personal		21	0.004
ftp	vsftpd	2.0.8 or later	21	0.004
http	lighttpd	1.4.20	20	0.004
http	DVR Systems webcam http interface		20	0.004
http	Boa HTTPd	0.94.13	20	0.004
ssh	OpenSSH	5.6	19	0.003
http	Apache	2.0.53	19	0.003
ssh	OpenSSH	5.9p1 Debian 5ubuntu1	18	0.003
ftp	Pure-FTPd		18	0.003
minecraft	Minecraft game server		17	0.003
http	Microsoft IIS httpd	5.1	17	0.003
http	Apache	2.2.9	16	0.003
ftp	ProFTPD		16	0.003
vnc			15	0.003
ssh	OpenSSH	5.3	15	0.003
smtp	Microsoft Exchange smtpd		15	0.003
http	Cross Web Server		15	0.003
http	Apache	2.0.52	15	0.003