Overview of services running on Port 500 UDP.
~876 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
isakmp68958978.716
no match-/--/-9717211.092
ericssontimestepEricsson Timestep Permit VPN790789.027
httplighttpd1.4.1994621.08
socks54370.05
netbios-ssn1410.016
utorrent-udpuTorrent UDP listener1030.012
dominoconsoleLotus Domino Console270.003
http150.002