Overview of services running on Port 771 TCP.
~13 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
digi-usb	Digi USB-over-TCP bridge				specialized	7573	54.369
no match						2298	16.498
chat	AIM or ICQ server					1478	10.611
http	lighttpd	1.4.29				454	3.259
http						449	3.223
http	lighttpd	1.4.19				369	2.649
http	Microsoft IIS httpd					170	1.22
realport	Digi EtherLite 16 or 32 RealPort				terminal server	118	0.847
http	Microsoft HTTPAPI httpd	2.0	SSDP/UPnP	Windows		108	0.775
ssh			protocol 1.5			90	0.646
http	thttpd	2.24				75	0.538
telnet						50	0.359
vnc	VNC		protocol 3.8			37	0.266
arcserve	ARCserve Discovery					31	0.223
http	Boa HTTPd	0.94.14rc21				29	0.208
http	thttpd	2.25b				25	0.179