Network Command Center
Real-time diagnostics across 10 global Points of Presence
Amsterdam to London, measured
Tier-1 transit carriers
DDoS protection enabled
Looking Glass
Datacenter Endpoints
23.105.41.222 184.107.179.151 23.106.226.75 Power users: iperf3
Browser speed tests measure the browser as much as the network. On a fast line, run iperf3 against a datacenter directly. The -R flag makes the server send, so you measure download rather than your own upload. Eight parallel streams over 20 seconds gives a true figure on long paths; a single short stream reads low.
Full iperf3 guide in the Knowledge Base : install steps, how to read the output, and what the stream count does to the result over distance.
iperf3 -c st-ams.gozen.host -p 5201 -R -P 8 -t 20 iperf3 -c st-vie.gozen.host -p 5201 -R -P 8 -t 20 iperf3 -c st-nbg.gozen.host -p 5201 -R -P 8 -t 20 iperf3 -c st-dc.gozen.host -p 5201 -R -P 8 -t 20 iperf3 -c st-sgp.gozen.host -p 5201 -R -P 8 -t 20