1). CORS-error
Caused by GIS admin manually disable service directory.
These kind of arcgis REST API endpoint regard as live,
You can use PHP proxy to bypass CORS-error.
List of all arcgis REST api have Cors-error (in folder style)
https://transparentgov.net/json2tree/esri/vendor/mappingsupport/dir.html?dir=./cors-error
when you click REST api root home page,
see red arrorw, red box
https://transparentgov.net/json2tree/esri/vendor/mappingsupport/url.html?url=https://transparentgov.net/data/live_data/csv/cors-error/combine-cors-error.csv
this kind of error message will cause cors-error
These kind of arcgis REST API endpoint regard as live,
You can use PHP proxy to bypass CORS-error.
https://gisweb.chulavistaca.gov/arcgis/rest/services
2). Error
Arcgis REST api endpoint return error message.
URL is live, but return ERROR message.
These kind of arcgis REST api endpoint regard as 'dead',
because no usefull information available, just the error message.
List of all Error message return endpoint
(In Tree style)
https://transparentgov.net/json2tree/esri/vendor/mappingsupport/tree.html
click REST api root home page
https://transparentgov.net/json2tree/esri/vendor/mappingsupport/url.html?url=https://transparentgov.net/data/live_data/csv/error/combine-error.csv
Arcgis REST api endpoint return error message.
URL is live, but return ERROR message.
These kind of arcgis REST api endpoint regard as 'dead',
because no usefull information available, just the error message.
https://services.ccgisc.org/portal/sharing/servers/7c88732ba0694b2098f17c434ed3a56b/rest/services
3). Hard network error ( dead )
These arcgis rest api endpoint was live, have record in ESRI's eco-system
However, it has been shut down for now.
List of all dead URL link
PHP Folder style
https://transparentgov.net/data/live_data/csv/dir.php?dir=./dead
click red box,
https://transparentgov.net/json2tree/esri/vendor/mappingsupport/url.html?url=https://transparentgov.net/data/live_data/csv/dead/combine-dead.csv
