UPDATE ......Confluence has now been updated to version 9.2.6. Please see following page for details on updates and maintenance:
Updates
THe NREN Service Matrix is part of the NREN Compendium. The code for the matrix is in: /app/assets/javascripts/matrix_report.
Main template is: /app/views/nrens_services.html.erb
The json data gets generated by the RoR backend and is in ReportsController::services_for_nren (app/controllers)