// Cloud region

westus

Microsoft · US West

Region details

Partition: Public
Airport code: SFO
Country: US
Nearest city: San Francisco, United States
Services: ActionGroupAzureApiManagementAzureAppServiceAzureAppServiceManagementAzureArcInfrastructureAzureAttestationAzureBackupAzureBotServiceAzureCognitiveSearchAzureConnectorsAzureContainerRegistryAzureCosmosDBAzureDataExplorerManagementAzureDevOpsAzureDevSpacesAzureDigitalTwinsAzureEventGridAzureEventHubAzureIoTHubAzureKeyVaultAzureMachineLearningAzureMonitorAzureOpenDatasetsAzurePortalAzureResourceManagerAzureSQLAzureSecurityCenterAzureServiceBusAzureSignalRAzureStorageBatchNodeManagementDataFactoryDynamics365ForMarketingEmailGatewayManagerHDInsightLogicAppsMicrosoftCloudAppSecurityMicrosoftContainerRegistryPowerBIPowerPlatformInfraPowerPlatformPlexPowerQueryOnlineSCCserviceServiceFabricStorageSyncServiceWindowsVirtualDesktop

Published prefixes

1,587 prefixes in Fastah's public IP data (1,358 IPv4, 229 IPv6). The first 100, in address order:

4.150.224.0/194.150.232.8/294.150.233.30/314.150.233.64/264.150.233.128/254.150.234.0/284.150.234.16/294.150.234.24/294.150.239.212/304.150.240.0/234.150.242.0/294.150.244.0/234.150.249.24/294.150.249.32/274.150.249.64/264.150.253.0/264.150.253.64/284.150.253.80/29

Show 82 more

4.150.255.0/249.129.20.0/239.129.40.0/249.129.58.144/289.129.96.0/229.129.108.0/239.129.115.0/259.129.117.128/269.129.119.64/279.129.119.160/289.129.160.0/219.129.216.0/2313.64.0.0/1613.64.16.129/3213.64.16.130/3113.64.16.132/3013.64.16.136/3113.64.16.138/3213.64.26.88/3213.64.27.44/3213.64.28.87/3213.64.29.32/3213.64.29.161/3213.64.30.76/3213.64.30.117/3213.64.30.118/3213.64.31.116/3213.64.35.24/3213.64.38.167/3213.64.38.225/3213.64.39.16/3213.64.39.170/3213.64.73.110/3213.64.109.111/3213.64.128.119/3213.64.174.215/3213.64.177.224/3213.64.186.156/3213.64.186.167/3213.64.186.181/3213.64.187.15/3213.64.187.17/3213.64.194.140/3213.64.196.27/3213.64.198.19/3213.64.198.97/3213.64.199.41/3213.64.215.62/3213.64.224.17/3213.64.231.196/3213.64.236.166/3213.64.236.222/3213.64.237.74/3213.64.238.253/3213.64.239.120/3213.64.240.133/3213.64.241.219/3213.64.243.209/3213.64.252.115/3213.64.254.98/3213.73.32.0/1913.83.0.0/1613.83.10.112/3213.83.10.141/3213.83.13.102/3213.83.14.75/3213.83.15.162/3213.83.17.188/3213.83.23.194/3213.83.55.150/3213.83.56.37/3213.83.64.166/3213.83.66.89/3213.83.66.124/3213.83.68.60/3213.83.70.105/3213.83.72.16/2813.83.86.230/3213.83.97.180/3213.83.97.188/3213.83.102.38/3213.83.145.222/32

Data as of 2026-11-05, from Fastah's daily geofeed crawl.

Source & provenance. From Microsoft's published IP range files, placed at the region's nearest city. Fastah lists them and does not edit them.