dns.wr.usgs.gov has one IP number , which also has a corresponding reverse pointer. jo, mil.jo, net.jo, gov.jo, org.jo and at least 54 other hosts use this as a nameserver. wr.usgs.gov is a domain controlled by three nameservers. All of them are on the same IP network. Incoming mail for wr.usgs.gov is handled by one mailserver at wr.usgs.gov themselves. dns.wr.usgs.gov is hosted on a server in United States.