CER ArcGIS Online Feature Services
The Canada Energy Regulator operates its own ArcGIS Online organization (portal neb-gis.maps.arcgis.com, organization id vNzamREXvX2WcX6d) and hosts 23 public feature services on it. This is the one genuinely CER-operated machine-readable API surface found in this review. The services directory, every FeatureServer descriptor and the /query operation all answered anonymous HTTPS requests on 2026-07-27 with no key, no signup and no terms click-through. Layers include CER_Pipeline_Systems_WGS84_view, Incident_Data_English_20191007_View (1,899 features confirmed by a returnCountOnly query), Prov_Pipe_Status (43 features), Prov_Pipe_Type, Oil_and_Gas_Resource_Area, Refinery, Western_Canada_Sedimentary_Basin, Pipelines_Profile_Links_EN_view and both English and French incident layers. The contract is Esri's ArcGIS REST API, not OpenAPI; no OpenAPI, Swagger or /api-docs document is published for it. This service backs the public CER Interactive Pipeline Map.