Although the primary purpose of TransPAC is to interconnect the Asian-Pacific Advanced Network (APAN) and the very-high-speed Backbone Network Service (BNS), this connection also gives APAN access to the many other high-performance R&E networks that peer at the STAR TAP. Some of these networks are CANARIE (Canada), NREN (NASA) and ESnet (U.S. Department of Energy), as well as other HPIIS networks soon to arrive, such as MirNET (Russia).