root.nic.pr has one IP number , which is the same as for nic.pr, but the reverse is elwyn2.nic.pr. us.pr, do.pr, jm.pr, tc.pr, au.pr and at least 76 other hosts point to the same IP. nic.pr is a domain controlled by five nameservers. Some of them are on the same IP network. Incoming mail for nic.pr is handled by one mailserver at nic.pr themselves. root.nic.pr is hosted on a server in Puerto Rico.