QRV since 1993.
The DX-cluster sysop is located in Vlaardingen.
Acces via the internet telnet to: dxc.pi4cc.nl:8000 The port is 8000.
A description of the cluster hardware:
The VPS server located in the Germany. The operating system is Debian 8 (Jessie) with Spider dx-cluster software. On the same server is the WWW server and email server for PI4CC.NL running. The server has a uptime of 99.94% So you will not missed any DX-spot if you use DX-cluster PI4CC.
If you want more info on the use of the DX-cluster, follow the link. You will see the traffic, users, spots and propagation over a 1 year period.
The DX-cluster is 24 Hrs, 7 days a week online. If you're connecting via internet, you will need a program to TELNET in. The most log/contest programs have a telnet function build in. Look at the manual.
Here is the user-manual for the software used at PI4CC dx-cluster.