OpenEther

BGP Looking Glass

Analyze BGP AS_PATH attributes, detect AS path prepending, and visualize autonomous system paths.

BGP Looking Glass

Supports: Simple paths (100 200 300), AS_SETs ({300 400}), ASDOT notation (1.1000)

HOW TO USE

  • • Enter AS_PATH as space-separated ASNs (e.g., 174 3356 1299)
  • • Supports AS_SET notation: {300 400}
  • • Supports ASDOT notation: 1.1000
  • • The tool will detect prepending, private ASNs, and other issues