How to read: Each cell shows the average RTT (round-trip time) in milliseconds from the source city (row) to the destination city (column). Click any cell to see individual traceroutes, hop-by-hop detail, and latency history.

Color scale: Green (<30ms excellent) | Yellow (30-80ms good) | Orange (80-150ms fair) | Red (>150ms poor)

Add/remove cities above to customize the matrix. Click any city name to see all its destinations.