The Internet's Domain Naming System allows each host computer to be accurately identified for e-mail routing and other purposes. The top-level domain appears at the end of a host name or e-mail address; for educational institutions this is "edu." Preceding it is an institutional prefix. For the University this is "upenn," yielding a domain name of "upenn.edu." As networking and e-mail become more familiar on campus, "upenn" is becoming a vernacular synonym for Penn-- as in "No Nittany Lions at upenn."

University of Pennsylvania