Overview of services running on Port 2525 TCP.
~294 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	Count	Percent
smtp		68979	23.462
smtp	PowerMTA smtpd	64014	21.773
smtp	Exim smtpd	59910	20.377
smtp	Postfix smtpd	35538	12.088
smtp	Sendmail	10023	3.409
no match	-/-	7583	2.579
smtp	Microsoft ESMTP	6548	2.227
http		3965	1.349
smtp	Microsoft Exchange smtpd	3852	1.31
irc	Dancer ircd	3692	1.256
http	SonicWALL	3526	1.199
smtp	MailEnable smptd	2652	0.902
http	Dart WebServer Tool	2120	0.721
telnet	Cisco IOS telnetd	2080	0.707
eggdrop	Eggdrop IRC bot console	1969	0.67
http	Apache	1563	0.532
chat	AIM or ICQ server	1562	0.531
telnet		1337	0.455
smtp	Communigate Pro SMTP	1159	0.394
http	lighttpd	853	0.29
smtp	Symantec Enterprise Security manager smtpd	812	0.276
http	AIM	665	0.226
smtp	IMail NT-ESMTP	646	0.22
smtp	Alt-N MDaemon mail server	503	0.171
smtp	Surgemail smtpd	430	0.146
http	Microsoft IIS httpd	415	0.141
http-proxy	EZproxy web proxy	360	0.122
ssh	OpenSSH	334	0.114
smtp	rblsmtpd wrapped smtpd	328	0.112
http	Gateway-Webs	295	0.1
smtp	Kerio Connect smtpd	269	0.091
smtp	IceWarp smtpd	195	0.066
smtp	Lotus Domino smtpd	185	0.063
smtp	MDaemon smtpd	182	0.062
telnet	Cisco 1721 router telnetd	165	0.056
smtp	Microsoft Exchange 2010 smtpd	150	0.051
http	GoAhead-Webs embedded httpd	144	0.049
http	Cassini	144	0.049
http	thttpd	140	0.048
smtp	Cisco PIX sanitized smtpd	135	0.046
http	Avtech AVN801 network camera	116	0.039
http	DrcomServer1.0	112	0.038
http	Netwave IP camera http config	109	0.037
http	Apache Tomcat/Coyote JSP engine	100	0.034
ssh		91	0.031
http	GoAhead-Webs	88	0.03
smtp	JAMES smtpd	86	0.029
http	Boa HTTPd	84	0.029
postgrey	Postfix Greylist Daemon	83	0.028
smtp	XMail SMTP server	74	0.025
smtp	Kerio MailServer	72	0.024
ftp	Microsoft ftpd	71	0.024
http	Buffalo AirStation http config	65	0.022
http-proxy	CCProxy http proxy	61	0.021
http	PDR-M800	56	0.019
smtp	Axigen smtpd	55	0.019
vnc	VNC	54	0.018
http	WangWnagSimpleServer	52	0.018
smtp	Barracuda Networks Spam Firewall smtpd	47	0.016
mongodb	MongoDB	45	0.015
http	mini_httpd	43	0.015
remoting	MS .NET Remoting services	41	0.014
smtp	ArGoSoft Mail Server Pro	39	0.013
smtp	Code-Crafters Ability Mail Server smtpd	37	0.013
irc-proxy	psyBNC	36	0.012
http	GeoVision GeoHttpServer for webcams	35	0.012
ftp	zFTPServer	35	0.012
smtp	MailEnable Enterprise smptd	34	0.012
ftp	Serv-U ftpd	33	0.011
smtp-proxy	ESET NOD32 anti-virus smtp proxy	32	0.011
smtp	Merak Mail Server smtpd	31	0.011
ssh	Dropbear sshd	29	0.01
http	uc-httpd	29	0.01
bittorrent	Bittorrent P2P client	29	0.01
ssh	NetScreen sshd	28	0.01
smtp	IA Mailserver smtpd	27	0.009
smtp	Dumbster fake smtpd	27	0.009
smtp	Cisco IronPort C160 firewall smtpd	27	0.009
http	nginx	27	0.009
nntp	INN nntpd	26	0.009
http	D-Link DIR-300 WAP http admin	26	0.009
http	uTorrent WebUI	25	0.009
http	MikroTik router config httpd	25	0.009
http	Cross Web Server	25	0.009
smtp	qpsmtpd	24	0.008
http	Hikvision-Webs	24	0.008
221		24	0.008
http-proxy	Squid http proxy	23	0.008
http	MiniServ	23	0.008
http	Intoto httpd	23	0.008
http	Gadspot/Avtech AV787 webcam http config	23	0.008
ssl	TLS	22	0.007
smtp	MAILsweeper SMTP proxy	22	0.007
smtp	ArGoSoft Mail Server Plus	22	0.007
http	Microsoft HTTPAPI httpd	22	0.007
ftp	FileZilla ftpd	22	0.007
smtp	Rockliffe MailSite	21	0.007
mysql	MySQL	21	0.007
ftp	vsftpd	21	0.007
telnet	Cisco router telnetd	20	0.007
smtp-proxy	Scalix smtp relay	20	0.007
smtp	Symantec Messaging Gateway smtpd	19	0.006
http	DVR Systems webcam http interface	19	0.006
ftp	Pure-FTPd	19	0.006
ftp		19	0.006
telnet	Linux telnetd	18	0.006
smtp-proxy	Python SMTP Proxy	18	0.006
smtp	Allworx 6x VoIP phone smtpd	18	0.006
http	Jetty	18	0.006
http	Httpd	18	0.006
upnp	Portable SDK for UPnP devices	17	0.006
http	Mercury SiteScope Application Managment httpd	17	0.006
http	Mbedthis-Appweb	17	0.006
http	DD-WRT milli_httpd	16	0.005
ftp	ProFTPD	16	0.005
directconnect	Direct Connect P2P	16	0.005
smtp-proxy	UserGate smtp proxy	15	0.005
smtp	Novell GroupWise	15	0.005
http	Netgear DG834G router http config	15	0.005
http	MikroTik router http config	15	0.005
ftp	vsftpd (before 2.0.8) or WU-FTPD	15	0.005
smtp	Tobit David.fx smtpd	14	0.005
smtp	MessageWall SMTP proxy	14	0.005
http	RemotelyAnywhere remote PC management httpd	14	0.005
http	GoAhead-Webs httpd	14	0.005
pop3	MailEnable POP3 Server	13	0.004
http	Siemens Gigaset A580 or S450 VoIP phone http config	13	0.004
http-proxy	F5 BIG-IP load balancer http proxy	13	0.004
http	Dreambox httpd	13	0.004
http	Allegro RomPager	13	0.004
ssh	Cisco SSH	12	0.004
shoutcast	SHOUTcast server	12	0.004
http	AIM HTTP	12	0.004
vnc	Apple remote desktop vnc	11	0.004
http	QNAP TS-219P NAS http config	10	0.003
http	Indy	10	0.003