IPARN Canada (pronounced I-PARN) was a national non-profit organization for Canadian Amateur Radio operators to interconnect local VHF/UHF networks.
[Update: According to archive.org’s cache of the IPARN website as of 2007, “IPARN is no more”. The previous website has been taken over by domain squatters. The only link/contact I could find was VE7RJO as of 2007. Updated the link below to the last available legitimate IPARN.ca backup]