The service URL of a feature service in ArcGIS Online can reveal where the source of the feature service is stored and the type of service.
Hosted services in ArcGIS Online
Features services hosted in ArcGIS Online show 'hosted' on the item details page, and the service URL is displayed in the following format:
This also applies for feature services hosted in other ArcGIS Online organizations, or are copied and hosted in ArcGIS Online as part of a collaboration. Refer to Portal for ArcGIS: About sharing feature layer and view data as copies for more information.
Stored services in ArcGIS Enterprise
Feature services stored in ArcGIS Enterprise and referenced or added to ArcGIS Online do not show 'hosted' on the item details page, and the service URL is displayed in the following format:
This also applies to feature services referenced in ArcGIS Online as part of a collaboration. Refer to Portal for ArcGIS: About sharing feature layers as a reference for more information.
Secured services in ArcGIS Online
When secured ArcGIS Enterprise services with stored credentials are added as an item to ArcGIS Online, ArcGIS Online changes the display of the service URL to the following format so as to not expose the server:
Tile layers in ArcGIS Online
Tile layers hosted in ArcGIS Online display the service URL in the following format: