Currently, there are three IGS servers supported throughout the world. Two servers are in the USA, and one is situated in France, Europe. You can make connection to one of the International Go Servers with the program telnet. The telnet takes as arguments the address of the machine you want to connect to and the number of the port of that machine. The internet addresses and port numbers of the servers are:
| host | host | port |
| icsib18.icsi.berkeley.edu | 128.32.201.46 | 6969 |
| lacerta.unm.edu | 129.24.14.70 | 6969 |
| cnam.cnam.fr | 192.33.159.6 | 6969 |
Of these three servers currently the Berkeley server is the most popular one. The reason is that most players on the IGS are living in the USA and the large disk capacity of the computer in Berkeley. The other two sites are mainly serving as a backup facility in case the Berkeley server is down.