hello, I have read about the LFT Tool at the following web page: http://www.mainnerve.com/lft/ It looks like this traceroute might succeed where traditional UDP Traceroutes fail. Does anybody know of any publicly accessible traceroute servers which are running LFT in the background? Thanks Russ Here are some other interesting online tools: AS Trace between any two starting points: http://www.fixedorbit.com/trace.htm AS Path Visualization: http://lab.verat.net/Jaspvi/ GASP - Graphical AS path: http://mogwai.frnog.org/sysctl/gasp/ (offline at the moment) _________________________________________________________________ Russ Haynal - Internet Instructor, Speaker and Paradigm Shaker "Helping organizations gain the most benefit from the Internet" russ@navigators.com http://navigators.com 703-729-1757