This server provides iperf3 testing capabilities to measure network performance between your device and our server. Use the commands below to run tests.
Server Information
Server: spk-wa.iperf.crunchbits.net
Port: 5201 (default)
Protocol: TCP/UDP
Port Speed: 2.5G
IPv4: Supported
IPv6: Supported
Download Test (Server to Client)
This tests your download speed from our server.
iperf3 -c spk-wa.iperf.crunchbits.net -R
Upload Test (Client to Server)
This tests your upload speed to our server.
iperf3 -c spk-wa.iperf.crunchbits.net
Advanced Options
Parallel Streams
To test with multiple parallel connections (e.g., 4):
iperf3 -c spk-wa.iperf.crunchbits.net -P 4
UDP Test
To perform a UDP test with specified bandwidth (e.g., 100 Mbps):
iperf3 -c spk-wa.iperf.crunchbits.net -u -b 100M
Test Duration
To change the test duration (e.g., 30 seconds):
iperf3 -c spk-wa.iperf.crunchbits.net -t 30
IPv6 Specific Test
To explicitly use IPv6 for testing:
iperf3 -c spk-wa.iperf.crunchbits.net -6
IPv4 Specific Test
To explicitly use IPv4 for testing:
iperf3 -c spk-wa.iperf.crunchbits.net -4