17600+ sites
Arcgis Hub Site (hosted on xxx.arcgis.com) static fast load
* This list only have hub site that host at ESRI domain "xxxx.arcgis.com" ( warning: they could have customized domain such as "xxx.gov" or "xxx.org" then farward to xxxxx.arcgis.com )
*This list does not include hub site that runs at their own server room ( who setup Arcgis hub site from their own arcgis enterprise portal). These case, their domain can not be "xxxx.arcgis.com". Instead, must be their own domain such as "xxxx.gov" or "xxxx.org"
To identify it is hosted on arcgis.com or their own domain, you can use ip identify tools to find out their IP, then find out this IP belongs to ESRI arcgis.com domain or not.
https://transparentgov.net/json2tree/esri/hub.site.static.html
Arcgis Hub Site hosted on xxx.arcgis.com ( live)
( slow, but real time sync with ESRI data source)
https://transparentgov.net/json2tree/esri/hub.site.live.html
It use exactly the same data source as original ESRI web sites
https://hub.arcgis.com/search?collection=Site
Previous years
History records in 2020 only have 8000+
History records in 2019 only have 4000+