Serverius speedtest

This speedtest server is located at the Serverius datacenters, AS50673 and is running on a 10GE connection with 5GB cap.

Test with IPERF

Iperf software and manuals you can find on official home page https://iperf.fr
You can find TCP Throughput calculator here.
For a more correct test, use the command like:
iperf -c speedtest.serverius.net -P 10    (for IPv4)
iperf -c speedtest.serverius.net -V -P 10 (for IPv6)
Also you can use IPERFv3 ( -R reverse mode (server sends, client receives)
iperf3 -c speedtest.serverius.net -p 5002 -P 10 -4    (for IPv4)
iperf3 -c speedtest.serverius.net -p 5002 -P 10 -6    (for IPv6)
( -R reverse mode (server sends, client receives)
iperf3 -c speedtest.serverius.net -p 5002 -P 10 -4 -R  (for IPv4)
iperf3 -c speedtest.serverius.net -p 5002 -P 10 -6 -R  (for IPv6)

Test with download files from FTP or HTTP

This archive is available over http and ftp on both IPv4 and IPv6.

10mb.bin, 100mb.bin, 1000mb.bin, 2000mb.bin, 5000mb.bin, 10000mb.bin
For a more correct test, use the command like:
wget -4 -O /dev/null http://speedtest.serverius.net/files/2000mb.bin (for IPv4)
wget -6 -O /dev/null http://speedtest.serverius.net/files/2000mb.bin (for IPv6)

Serverius speedtest