dnsext02.usa.net has one IP number , which also has a corresponding reverse pointer. vndvg055.usa.net point to the same IP. mx.net, usa.net, mbox.net, myusa.net, d3.usa.net and at least 33 other hosts use this as a nameserver. usa.net is delegated to four nameservers, however two extra nameservers are listed in the zone. There are two duplicated IP numbers. Some of them are on the same IP network. Incoming mail for usa.net is handled by one mailserver at netaddress.usa.net. usa.net has one IP number. dnsext02.usa.net is hosted on a server in United States.