lft (net/lft) Updated: 2 weeks, 5 days ago Add to my watchlist 0

LFT, short for Layer Four Traceroute, is a traceroute that uses TCP, UDP, ICMP and adaptive probes to pass through firewalls, exposes ECMP forks, discovers the path MTU, labels every network in the path with its AS and netname, and traces IPv4 and IPv6 end to end. Output styles include text, XML, JSON, GeoJSON, KML, SVG, GraphViz and Mermaid, plus an ncurses watch mode. Also includes whob, a prefix whois client for pWhoIs, RADB, Team Cymru and RIPE RIS.

LFT, short for Layer Four Traceroute, is a traceroute that uses TCP, UDP, ICMP and adaptive probes to pass through firewalls, exposes ECMP forks, discovers the path MTU, labels every network in the path with its AS and netname, and traces IPv4 and IPv6 end to end. Output styles include text, XML, JSON, GeoJSON, KML, SVG, GraphViz and Mermaid, plus an ncurses watch mode. Also includes whob, a prefix whois client for pWhoIs, RADB, Team Cymru and RIPE RIS.

+ Show more

GitHub

• Details
• Builds
• Installation Stats
• Trac Tickets
• Report an Issue with this port
• API
• Stats FAQ

Statistics for selected duration

2026-Sep-18 to 2026-Oct-18

Variants table

Monthly Statistics

Can remain cached for up to 24 hours