SterJo Fast IP Scanner could be one of the world's fastest IP scanner available for free.
This tool could ping any IP range with an incredible speed and get a response if the IP addresses are available.
Currently the software is capable to scan over 1000 IP addresses in less than 30 seconds. If this sound to you like an exaggeration, then download and try this free IP scanner to convince yourself.Download Portable
SterJo Fast IP Scanner works on all Windows platform starting from Windows XP to the latest Windows 10.