Contact Us To know more about us. Write us or leave us your comments. Contact Us Name * Last Name Email * Phone Message reCAPTCHA If you are human, leave this field blank. Submit 787 - 764 - 0000 ext. 855 pr.explorers@upr.edu University of Puerto Rico-Rio Piedras Campus, Ponce De León Ave. PO Box 21790. San Juan, PR 00931-1790 PR-SPRInT