Search keyword 'pad' or 'usgs' will list all the topic
https://maps.usgs.gov/padusdataexplorer/
gis endpoint (Arcgis Server REST service)
https://gis.usgs.gov/padus/rest/services
1. Folder Entrance
https://transparentgov.net/json2tree/esri/server/folder.html?url=https%3A%2F%2Fgis.usgs.gov%2Fpadus%2Frest%2Fservices&org=USGS+Protected+Areas+PAD%2C%26nbsp%3B%26nbsp%3B&cross=default&timeout=10000&select_folder=14&select_layer=0
gis1 instance (Arcgis Server Portal REST service)
https://gis1.usgs.gov/arcgis/rest/services
2. Folder Entrance
https://transparentgov.net/json2tree/esri/server/folder.html?url=https%3A%2F%2Fgis1.usgs.gov%2Farcgis%2Frest%2Fservices&org=https%3A%2F%2Fgis1.usgs.gov%2Farcgis%2Frest%2Fservices&cross=default&timeout=10000&select_folder=21&select_layer=0
Arcgis online REST service
Warning: Feature Service only, without map service
that means no mapimage layer available, no dynamic layer, maplex etc....
https://services.arcgis.com/v01gqwM5QqNysAAi/arcgis/rest/services
3. Folder Entrance
Advanced version
filter layer by keyword "pad" to highlight all related layers
https://transparentgov.net/json2tree/esri/server2/folder.html?org=https%3A%2F%2Fservices.arcgis.com%2Fv01gqwM5QqNysAAi%2Farcgis%2Frest%2Fservices&url=https%3A%2F%2Fservices.arcgis.com%2Fv01gqwM5QqNysAAi%2Farcgis%2Frest%2Fservices&select_folder=678&select_layer=0&arcgis_online_token=&timeout=5000
Warning: tile service only
https://tiles.arcgis.com/tiles/v01gqwM5QqNysAAi/arcgis/rest/services
PAD tile service is here
https://tiles.arcgis.com/tiles/v01gqwM5QqNysAAi/arcgis/rest/services/PADUS4_0VectorAnalysis_National_WebMerc_PA
Folder entrance for arcgis online Tile service
PAD tile service is password protected, so it is not show here until you login with password
https://transparentgov.net/json2tree/esri/server2/folder.html?org=https%3A%2F%2Ftiles.arcgis.com%2Ftiles%2Fv01gqwM5QqNysAAi%2Farcgis%2Frest%2Fservices&url=https%3A%2F%2Ftiles.arcgis.com%2Ftiles%2Fv01gqwM5QqNysAAi%2Farcgis%2Frest%2Fservices&arcgis_online_token=&select_folder=70&select_layer=
1. Arcgis Server Portal REST service endpoint gis instance
2. Arcgis Server Portal REST service endpoint gis1 instance
3. Arcgis online REST service endpoint ( ESRI hosted paid service)
GreenInfo Protected Land
https://www.protectedlands.net/map/
arcgis rest api endpoint
https://gis.usgs.gov/sciencebase2/rest/services/Catalog/5c99634ce4b0b8a7f628915b/MapServer
folder entrance
https://transparentgov.net/json2tree/esri/server/folder.html?org=https%3A%2F%2Fgis.usgs.gov%2Fsciencebase2%2Frest%2Fservices%2FCatalog%2F5c99634ce4b0b8a7f628915b%2FMapServer&url=https%3A%2F%2Fgis.usgs.gov%2Fsciencebase2%2Frest%2Fservices%2FCatalog%2F5c99634ce4b0b8a7f628915b%2FMapServer&select_folder=1&select_layer=0