ns3.electric.net has one IP number , which also has a corresponding reverse pointer. ns3.showcasere.com cnames to this hostname. shk.ca, nal.org, bht.com, dubo.com, essa.com and at least 100 other hosts use this as a nameserver. electric.net is a domain controlled by three nameservers at electric.net themselves. All of them are on different IP networks. Incoming mail for electric.net is handled by three mailservers. All of them are on different IP networks. ns3.electric.net is hosted on a server in Canada.