darrow.helios.nd.edu		IP address: 129.74.250.69

chlorine.helios.nd.edu          IP address: 129.74.141.35

chromium.helios.nd.edu		IP address: 129.74.141.252

cobalt.helios.nd.edu 		IP address: 129.74.141.230

manganese.helios.nd.edu		IP address: 129.74.142.154

phosphorus.helios.nd.edu	IP address: 129.74.143.227