.org.pr is a country-specific Internet Domain (ccTLD) from Puerto Rico.
Puerto Rico, officially the Commonwealth of Puerto Rico is an unincorporated territory of the United States, located in the northeastern Caribbean Sea, east of the Dominican Republic, and west of the Virgin Islands.
.org is the abbrevation for "organization"
Therefore, this domain is especially fitting for NOGs and non-commercial associations related to Puerto Rico.
Organizations in Puerto Rico