pissoff.boortz.net has one IP number. ons.mr, dai.es, unip.br, nxs7.com, bobcat.ca and at least 100 other hosts point to the same IP. boortz.net is a domain controlled by four nameservers at everydns.net. All of them are on different IP networks. Incoming mail for boortz.net is handled by one mailserver having a total of three IP numbers. All of them are on the same IP network. boortz.net has one IP number.