Frequently asked question
To provide high-performance and availability for ArcGIS Online basemap services, Esri utilizes the web acceleration and traffic management services of Akamai. This web acceleration service results in dynamic IP addresses being returned when connecting to ArcGIS Online, because basemaps are accessed via services.arcgisonline.com, to most efficiently route requests to the servers.
Note: Only ArcGIS Online basemaps have static IP addresses. When static IP addresses are required, it is no longer possible to utilize Akamai services. Therefore, it is likelier to experience poorer performance.
The required firewall domain exceptions to access ArcGIS Online as listed below.
http://*.arcgis.com
https://*.arcgis.com
http://*.arcgisonline.com
https://*.arcgisonline.com
https://ago-item-storage.s3.amazonaws.com
http://*.esri.com
https://*.esri.com
http://*.virtualearth.net
Article ID: 000012925
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