VOSTROM develops several popular software products including Path Analyzer Pro, regarded by many as the world's most advanced traceroute and network path analysis tool. We also offer world-class network and security related professional services including active threat mitigation.
Path Analyzer Pro
graphical traceroute, whois, geolocation, network testing, and more
Path Analyzer Pro integrates the world's most advanced traceroute software with performance measurements, DNS, whois, and specialized network resolution to help investigate network issues. By incorporating all of these powerful features into one simple graphical interface, Path Analyzer Pro has become a must-have tool for any network, systems, or security professional. Path Analyzer Pro is available for both Microsoft Windows and Apple Mac OS X.
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Prefix WhoIs Project
The Prefix WhoIs Project demonstrates continued progress in May 2026
Layer Four Traceroute, WhoB, pWidget, and other Prefix WhoIs tools have been updated. The Prefix WhoIs Project provides a whois-compatible client and server framework for disclosing various up-to-date network routing information and is also the home of layer four traceroute (LFT) and other popular open-source network tools. Instead of using registrar-originated network information (which is often unspecific or inaccurate), Prefix WhoIs uses the Internet's global routing table as gleaned from a number of routing peers around the world.
