IP Intelligence Authority Platform

Azure westus2 IP ranges

The Microsoft Azure region westus2 uses 989 IPv4 and 209 IPv6 blocks, covering about 2.1 million unique IPv4 addresses. It is one of 78 Azure regions with published address ranges.

IPv4 blocks

989

IPv6 blocks

209

Unique IPv4 addresses

2,061,546

Range data updated 2026-11-07

westus2 address prefixes

The first 1,000 of 1,198 prefixes are listed.

• 4.149.64.0/19
• 4.149.67.227/32
• 4.149.68.5/32
• 4.149.68.65/32
• 4.149.68.80/32
• 4.149.68.107/32
• 4.149.68.115/32
• 4.149.128.0/17
• 4.149.254.68/30
• 4.154.0.0/15
• 4.154.144.64/29
• 4.155.160.115/32
• 4.155.162.75/32
• 4.155.162.242/32
• 4.155.163.32/32
• 4.155.163.91/32
• 4.155.164.225/32
• 4.242.0.0/17
• 4.246.0.0/17
• 4.246.50.94/32
• 9.129.39.0/24
• 9.129.47.128/25
• 9.129.56.160/27
• 9.129.57.128/28
• 9.129.118.96/27
• 9.129.225.0/24
• 9.129.239.128/25
• 9.129.244.64/26
• 9.129.247.208/28
• 13.66.128.0/17
• 13.66.130.243/32
• 13.66.134.18/32
• 13.66.136.0/26
• 13.66.136.192/29
• 13.66.137.0/26
• 13.66.138.0/26
• 13.66.138.64/28
• 13.66.138.80/29
• 13.66.138.88/30
• 13.66.138.92/31
• 13.66.138.96/27
• 13.66.138.128/25
• 13.66.140.0/26
• 13.66.140.64/29
• 13.66.140.72/29
• 13.66.140.80/28
• 13.66.140.128/28
• 13.66.140.144/29
• 13.66.140.152/29
• 13.66.140.168/29
• 13.66.140.176/28
• 13.66.140.192/26
• 13.66.141.0/27
• 13.66.141.32/27
• 13.66.141.144/29
• 13.66.141.152/29
• 13.66.141.160/28
• 13.66.141.176/28
• 13.66.142.64/30
• 13.66.142.80/28
• 13.66.142.96/27
• 13.66.143.128/28
• 13.66.143.218/32
• 13.66.143.219/32
• 13.66.143.220/30
• 13.66.145.0/26
• 13.66.145.72/29
• 13.66.145.96/27
• 13.66.145.128/26
• 13.66.145.192/27
• 13.66.145.224/30
• 13.66.145.232/29
• 13.66.146.0/24
• 13.66.147.0/25
• 13.66.147.144/28
• 13.66.147.192/26
• 13.66.148.0/24
• 13.66.149.0/26
• 13.66.149.68/31
• 13.66.149.78/31
• 13.66.149.128/26
• 13.66.150.216/29
• 13.66.152.164/32
• 13.66.158.8/32
• 13.66.160.124/32
• 13.66.166.89/32
• 13.66.167.194/32
• 13.66.168.209/32
• 13.66.173.192/32
• 13.66.176.16/28
• 13.66.176.48/28
• 13.66.209.135/32
• 13.66.210.205/32
• 13.66.212.205/32
• 13.66.220.187/32
• 13.66.225.188/32
• 13.66.225.240/32
• 13.66.226.80/32
• 13.66.226.151/32
• 13.66.226.202/32
• 13.66.227.117/32
• 13.66.227.193/32
• 13.66.231.27/32
• 13.66.231.217/32
• 13.66.232.64/28
• 13.66.232.208/28
• 13.66.232.224/28
• 13.66.234.0/27
• 13.66.241.134/32
• 13.66.244.249/32
• 13.77.128.0/18
• 13.77.136.80/32
• 13.77.148.229/32
• 13.77.150.166/32
• 13.77.155.39/32
• 13.77.157.133/32
• 13.77.160.162/32
• 13.77.160.237/32
• 13.77.163.148/32
• 13.77.165.61/32
• 13.77.174.177/32
• 13.77.182.13/32
• 13.77.184.64/28
• 13.104.129.64/26
• 13.104.145.0/26
• 13.104.208.192/26
• 13.104.213.0/25
• 13.104.220.0/25
• 13.105.14.0/25
• 13.105.14.128/26
• 13.105.18.160/27
• 13.105.36.0/27
• 13.105.36.32/28
• 13.105.36.64/27
• 13.105.36.128/26
• 13.105.66.64/26
• 13.105.101.176/28
• 13.105.104.240/28
• 13.105.105.32/27
• 13.105.105.64/27
• 13.105.107.112/28
• 13.105.107.160/27
• 13.105.107.192/27
• 13.106.57.181/32
• 13.106.57.196/31
• 20.3.0.0/16
• 20.3.187.198/32
• 20.3.226.231/32
• 20.9.128.0/17
• 20.9.155.144/28
• 20.9.156.128/26
• 20.9.204.0/25
• 20.9.204.128/25
• 20.9.206.0/23
• 20.20.58.96/28
• 20.20.76.0/22
• 20.29.128.0/17
• 20.33.46.0/24
• 20.33.160.0/24
• 20.33.185.0/24
• 20.33.230.0/24
• 20.33.253.0/24
• 20.36.0.0/19
• 20.36.0.108/32
• 20.36.26.132/32
• 20.38.99.0/24
• 20.42.128.0/19
• 20.42.128.64/30
• 20.42.128.68/31
• 20.42.128.70/31
• 20.42.128.72/29
• 20.42.128.96/27
• 20.42.129.16/28
• 20.42.129.64/26
• 20.42.129.184/29
• 20.42.129.192/26
• 20.42.131.0/28
• 20.42.131.16/28
• 20.42.131.32/31
• 20.42.131.40/29
• 20.42.131.48/29
• 20.42.131.64/26
• 20.42.131.128/26
• 20.42.131.192/27
• 20.42.131.224/29
• 20.42.132.0/23
• 20.42.134.0/23
• 20.42.160.0/23
• 20.42.168.0/21
• 20.42.168.128/25
• 20.42.169.192/26
• 20.42.170.128/25
• 20.42.174.128/25
• 20.42.176.0/20
• 20.47.62.0/23
• 20.47.120.0/23
• 20.51.8.0/21
• 20.51.8.96/27
• 20.51.8.192/29
• 20.51.8.204/30
• 20.51.9.0/26
• 20.51.9.128/25
• 20.51.10.0/23
• 20.51.12.32/27
• 20.51.12.128/26
• 20.51.12.248/29
• 20.51.13.64/30
• 20.51.14.48/28
• 20.51.14.76/31
• 20.51.14.96/27
• 20.51.14.128/25
• 20.51.15.0/25
• 20.51.64.0/18
• 20.51.73.8/32
• 20.51.73.11/32
• 20.51.73.22/31
• 20.51.73.25/32
• 20.51.73.26/31
• 20.51.73.36/32
• 20.51.73.39/32
• 20.51.73.44/32
• 20.57.128.0/18
• 20.59.0.0/18
• 20.60.20.0/24
• 20.60.68.0/22
• 20.60.152.0/23
• 20.60.228.0/23
• 20.64.128.0/17
• 20.69.64.0/18
• 20.69.128.0/18
• 20.72.192.0/18
• 20.72.220.20/32
• 20.72.235.82/31
• 20.72.243.225/32
• 20.72.244.58/32
• 20.72.244.108/32
• 20.80.128.0/18
• 20.83.64.0/18
• 20.83.192.0/18
• 20.83.192.0/26
• 20.83.192.64/26
• 20.83.192.128/26
• 20.83.192.192/29
• 20.83.192.208/30
• 20.83.192.212/32
• 20.83.192.246/31
• 20.83.193.0/26
• 20.83.195.120/29
• 20.83.220.208/28
• 20.83.220.224/27
• 20.83.221.20/30
• 20.83.221.64/28
• 20.83.221.80/30
• 20.83.221.84/31
• 20.83.221.86/31
• 20.83.221.96/28
• 20.83.221.208/29
• 20.83.221.240/28
• 20.83.222.224/27
• 20.94.192.0/18
• 20.94.202.208/31
• 20.94.202.212/31
• 20.94.203.0/31
• 20.94.203.4/31
• 20.94.203.8/31
• 20.94.203.22/31
• 20.94.203.32/31
• 20.94.203.46/31
• 20.94.203.202/32
• 20.95.3.0/24
• 20.95.37.0/24
• 20.95.38.0/23
• 20.95.251.0/24
• 20.98.64.0/18
• 20.99.128.0/17
• 20.99.189.70/32
• 20.99.189.158/32
• 20.99.190.19/32
• 20.109.128.0/18
• 20.109.128.105/32
• 20.109.128.127/32
• 20.112.0.0/17
• 20.114.0.0/18
• 20.114.58.89/32
• 20.114.58.110/32
• 20.114.59.46/32
• 20.114.59.104/32
• 20.114.59.183/32
• 20.115.128.0/17
• 20.115.168.34/32
• 20.115.169.20/32
• 20.115.232.0/21
• 20.115.247.0/26
• 20.120.128.0/17
• 20.125.0.0/18
• 20.125.1.80/28
• 20.125.1.96/28
• 20.125.4.168/31
• 20.125.4.170/31
• 20.125.4.176/28
• 20.125.4.192/29
• 20.125.5.248/29
• 20.135.18.0/23
• 20.135.228.0/22
• 20.135.232.0/23
• 20.143.84.0/22
• 20.143.88.0/23
• 20.143.136.0/23
• 20.150.68.0/24
• 20.150.78.0/24
• 20.150.87.0/24
• 20.150.107.0/24
• 20.152.4.0/23
• 20.152.96.0/23
• 20.152.128.0/23
• 20.152.134.0/23
• 20.153.24.0/24
• 20.153.47.0/24
• 20.153.61.0/24
• 20.153.89.0/24
• 20.153.99.0/24
• 20.153.127.0/24
• 20.153.136.0/24
• 20.153.157.0/24
• 20.153.159.0/24
• 20.153.160.0/22
• 20.153.164.0/24
• 20.157.25.0/24
• 20.157.50.0/23
• 20.157.106.0/24
• 20.157.110.0/24
• 20.157.118.0/24
• 20.157.125.0/24
• 20.157.180.0/24
• 20.157.249.0/24
• 20.187.0.0/18
• 20.187.39.6/32
• 20.187.50.88/32
• 20.187.53.13/32
• 20.190.0.0/18
• 20.190.8.13/32
• 20.190.8.21/32
• 20.190.8.196/32
• 20.190.9.86/32
• 20.190.60.38/32
• 20.190.133.0/24
• 20.190.154.0/24
• 20.191.64.0/18
• 20.191.83.23/32
• 20.191.83.144/32
• 20.191.109.188/32
• 20.201.223.0/24
• 20.201.228.0/23
• 20.201.231.0/24
• 20.202.23.0/24
• 20.209.100.0/23
• 20.209.154.0/23
• 20.209.186.0/23
• 20.230.128.0/17
• 20.236.0.0/18
• 20.252.0.0/17
• 23.98.47.0/24
• 23.102.192.0/21
• 23.102.203.0/24
• 40.64.64.0/18
• 40.64.65.76/32
• 40.64.66.113/32
• 40.64.112.0/24
• 40.64.113.0/26
• 40.64.113.64/26
• 40.64.113.128/26
• 40.64.113.192/26
• 40.64.114.0/26
• 40.64.116.4/31
• 40.64.128.0/21
• 40.64.128.0/25
• 40.64.128.128/27
• 40.64.128.160/27
• 40.64.128.224/27
• 40.64.132.84/30
• 40.64.132.88/30
• 40.64.132.96/28
• 40.64.132.128/28
• 40.64.132.160/27
• 40.64.132.232/29
• 40.64.132.240/28
• 40.64.134.0/25
• 40.64.134.128/29
• 40.64.134.136/31
• 40.64.134.138/32
• 40.64.134.144/28
• 40.64.134.160/29
• 40.64.134.192/26
• 40.64.135.0/27
• 40.64.135.72/30
• 40.64.135.88/29
• 40.64.135.128/25
• 40.64.145.160/28
• 40.64.149.64/27
• 40.64.174.0/25
• 40.65.64.0/18
• 40.77.136.0/28
• 40.77.136.64/28
• 40.77.139.128/25
• 40.77.160.0/27
• 40.77.162.0/24
• 40.77.164.0/24
• 40.77.169.0/24
• 40.77.175.64/27
• 40.77.177.0/24
• 40.77.178.0/23
• 40.77.180.0/23
• 40.77.182.64/27
• 40.77.185.128/25
• 40.77.186.0/23
• 40.77.188.0/22
• 40.77.198.128/25
• 40.77.199.128/26
• 40.77.200.0/25
• 40.77.224.96/27
• 40.77.230.0/24
• 40.77.232.128/25
• 40.77.234.224/27
• 40.77.236.128/27
• 40.77.240.128/25
• 40.77.241.0/24
• 40.77.242.0/23
• 40.77.244.0/25
• 40.77.247.0/24
• 40.77.249.0/24
• 40.77.250.0/24
• 40.77.254.128/25
• 40.78.208.32/30
• 40.78.217.0/24
• 40.78.240.0/20
• 40.78.240.0/26
• 40.78.240.192/29
• 40.78.241.0/26
• 40.78.242.0/25
• 40.78.242.128/28
• 40.78.242.144/29
• 40.78.242.152/29
• 40.78.242.160/29
• 40.78.242.168/30
• 40.78.242.176/28
• 40.78.242.224/27
• 40.78.243.16/29
• 40.78.243.32/27
• 40.78.243.64/26
• 40.78.243.192/26
• 40.78.245.0/28
• 40.78.245.16/28
• 40.78.245.32/27
• 40.78.245.64/26
• 40.78.245.144/28
• 40.78.245.160/27
• 40.78.245.192/30
• 40.78.245.200/30
• 40.78.245.208/28
• 40.78.246.0/24
• 40.78.247.0/26
• 40.78.247.64/26
• 40.78.247.160/32
• 40.78.247.192/26
• 40.78.248.0/26
• 40.78.248.192/29
• 40.78.249.0/26
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• 40.78.250.64/28
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• 40.78.250.208/29
• 40.78.250.224/27
• 40.78.251.0/26
• 40.78.251.128/28
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• 40.78.253.0/26
• 40.78.253.64/30
• 40.78.253.68/30
• 40.78.253.72/29
• 40.78.253.84/31
• 40.78.253.128/26
• 40.78.253.192/26
• 40.78.254.0/23
• 40.79.206.128/27
• 40.80.160.0/24
• 40.82.36.0/22
• 40.87.232.0/21
• 40.90.8.0/21
• 40.90.16.192/26
• 40.90.131.32/27
• 40.90.132.48/28
• 40.90.136.224/27
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• 40.90.153.0/26
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• 40.90.218.196/31
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• 40.91.0.0/22
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• 40.91.70.79/32
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• 40.91.160.0/19
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• 40.97.53.192/26
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• 40.98.3.64/26
• 40.123.160.0/22
• 40.125.64.0/18
• 40.125.103.251/32
• 40.126.5.0/24
• 40.126.26.0/24
• 48.192.0.0/17
• 48.192.3.92/30
• 48.192.3.96/27
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• 48.200.0.0/17
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• 48.200.63.32/29
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• 48.204.5.96/27
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• 48.208.73.0/24
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• 48.212.7.0/24
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• 48.221.0.0/17
• 48.221.8.80/28
• 48.221.8.96/29
• 48.221.8.128/26
• 51.5.71.0/24
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• 51.143.58.207/32
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• 51.143.127.203/32
• 52.96.11.0/24
• 52.101.28.0/22
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• 52.114.148.0/22
• 52.115.55.0/24
• 52.121.166.0/24
• 52.123.5.0/24
• 52.123.19.0/24
• 52.123.125.0/24
• 52.123.221.0/24
• 52.136.0.0/22
• 52.137.64.0/18
• 52.137.89.147/32
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• 2603:1030:c00::/48
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• 2603:1030:c02:2::443/128
• 2603:1030:c02:2::4e1/128

Using these ranges

Region prefix lists are used to allowlist traffic from workloads in westus2, to route or geofence by cloud region, and to recognise Azure infrastructure in logs. Prefixes move between regions and services over time, so refresh any allowlist regularly rather than hard-coding it. An address inside these ranges tells you which network hosts it, not who is renting it; check each address's profile for risk evidence.

Azure ranges are shared between customer workloads and Microsoft-operated services. An address in a regional compute range is usually a customer virtual machine; Microsoft's own crawlers and mail systems have separate, verifiable identities.

Other Azure regions

• australiacentral317 blocks
• australiacentral2281 blocks
• australiaeast892 blocks
• australiasoutheast800 blocks
• austriaeast283 blocks
• belgiumcentral247 blocks
• brazilne4 blocks
• brazilse346 blocks
• brazilsouth745 blocks
• canadacentral823 blocks
• canadaeast582 blocks
• centralfrance794 blocks
• centralindia776 blocks
• centralus1,749 blocks
• centraluseuap684 blocks
• chilec291 blocks
• denmarkeast317 blocks
• eastasia796 blocks
• eastus2,095 blocks
• eastus22,512 blocks
• eastus2euap1,093 blocks
• eastus3278 blocks
• germanyn407 blocks
• germanywc638 blocks
• indiasouthcentral202 blocks
• indonesiacentral402 blocks
• israelcentral384 blocks
• israelnorthwest275 blocks
• italynorth429 blocks
• japaneast814 blocks
• japanwest670 blocks
• jioindiacentral250 blocks
• jioindiawest358 blocks
• koreacentral657 blocks
• koreasouth425 blocks
• malaysiasouth368 blocks
• malaysiawest313 blocks
• mexicocentral332 blocks
• newzealandnorth339 blocks
• northcentralus852 blocks
• northeastus5156 blocks
• northeurope1,683 blocks
• northeurope210 blocks
• norwaye544 blocks
• norwayw378 blocks
• polandcentral423 blocks
• qatarcentral402 blocks
• southafricanorth588 blocks
• southafricawest381 blocks
• southcentralus1,573 blocks
• southcentralus2164 blocks
• southeastasia1,043 blocks
• southeastasia3165 blocks
• southeastus169 blocks
• southeastus3161 blocks
• southeastus5168 blocks
• southfrance415 blocks
• southindia510 blocks
• southwestus164 blocks
• spaincentral370 blocks

All Microsoft Azure IP ranges · All providers · IP address lookup