Windows Update

Domains

Primary Domains

• forefrontdl.microsoft.com
• ntservicepack.microsoft.com
• statsfe2.ws.microsoft.com
• update.microsoft
• update.microsoft.com
• update.microsoft.com.nsatc.net
• windowsupdate.com
• windowsupdate.microsoft.com
• windowsupdate.nsatc.net
• wustat.windows.com

Platform Domains

Akamai	{hidden}.microsoft.com.akadns.net	and 1 more
Edgio	{hidden}.llnwi.net	and 1 more
Lumen CDN	{hidden}.footprint.net

Applications are sometimes deployed on partner networks, parent company networks, or regional hosting providers. The following is a sample of Windows Update IP addresses deployed on this type of network.

Hosting vendors like AWS and Microsoft Azure provide cloud-based computing and network resources to deliver applications. The hosting platforms used by Windows Update are summarized below by geographical points-of-presence (PoP).

Each PoP can host many IPs to deliver an application. A sample IP is provided.

In order to get information to end users more quickly, many applications are distributed from multiple geographical points-of-presence (PoPs) using Content Delivery Networks (CDNs).

Each PoP can host many IPs to deliver an application. A sample IP is provided.

Take special note of CDNs that use Anycast technology. Anycast makes it possible to route a single IP address to a variety of different geographic locations. In other words, one global Anycast IP is hosted in multiple geographic locations.