ns3.icg.net has one IP number , which also has a corresponding reverse pointer. ns8.customer.level3.net point to the same IP. srg.com, houg.net, mgapr.com, heska.com, exxcel.com and at least 100 other hosts use this as a nameserver. icg.net is delegated to three nameservers, however three extra nameservers are listed in the zone. All nameservers are at customer.level3.net having a total of seven IP numbers. Some of them are on the same IP network. Incoming mail for icg.net is handled by two mailservers at ari-co.icg.net. They are on the same IP network. ns3.icg.net is hosted on a server in United States.