Overview of services running on Port 257 TCP.
~3 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
no match	-/-	1439	42.224
chat	AIM or ICQ server	845	24.795
http	lighttpd	217	6.367
http		180	5.282
http	Microsoft IIS httpd	119	3.492
http	Microsoft HTTPAPI httpd	89	2.612
ssh	OpenSSH	74	2.171
ssh		59	1.731
fw1-log	Checkpoint Firewall1 logging service	45	1.32
telnet		38	1.115
http	Boa HTTPd	24	0.704
ftp		23	0.675
arcserve	ARCserve Discovery	21	0.616
vnc	VNC	19	0.558
smtp	Microsoft ESMTP	16	0.469
mysql	MySQL	15	0.44
http	nginx	12	0.352
ftp	Microsoft ftpd	12	0.352