AWS us-gov-west-1 IP ranges

Amazon Web Services (AWS) region

The Amazon Web Services (AWS) region us-gov-west-1 uses 105 IPv4 and 51 IPv6 blocks, covering about 1.2 million unique IPv4 addresses. It is one of 42 AWS regions with published address ranges.

IPv4 blocks: 105
IPv6 blocks: 51
Unique IPv4 addresses: 1,151,036

Range data updated 2026-11-07

us-gov-west-1 address prefixes

1.178.30.0/24
3.2.99.0/24
3.4.16.0/21
3.30.0.0/15
3.30.40.84/30
3.30.98.64/26
3.30.98.128/26
3.30.129.0/24
3.30.130.0/23
3.30.204.0/24
3.32.0.0/16
3.32.43.160/27
3.32.139.0/24
3.32.190.0/25
3.32.190.128/27
3.32.190.160/27
3.32.190.244/30
3.32.190.248/29
3.32.249.128/25
3.45.64.0/18
13.166.0.0/15
15.200.0.0/16
15.200.27.96/27
15.200.28.0/27
15.200.28.32/27
15.200.28.80/30
15.200.28.88/29
15.200.28.240/28
15.200.141.0/25
15.200.141.128/25
15.200.150.0/23
15.200.176.0/25
15.200.176.128/28
15.200.176.192/26
15.205.0.0/16
15.205.2.192/26
15.205.82.0/23
15.205.84.0/23
18.96.8.0/21
18.99.240.0/20
35.71.116.0/24
40.38.0.0/16
40.38.87.128/25
40.38.204.0/23
40.39.0.0/16
40.39.44.0/22
40.39.100.0/22
40.39.198.0/23
52.46.176.0/22
52.46.224.0/20
52.61.0.0/16
52.61.40.16/28
52.61.40.32/28
52.61.40.48/29
52.61.40.56/29
52.61.40.64/29
52.61.40.72/29
52.61.40.80/29
52.61.40.104/29
52.61.193.0/24
52.61.226.0/23
52.94.9.0/24
52.94.152.184/32
52.94.152.185/32
52.94.152.186/32
52.94.152.187/32
52.94.152.188/32
52.94.152.189/32
52.94.152.190/32
52.94.152.191/32
52.94.152.192/32
52.94.152.193/32
52.94.152.194/32
52.94.152.195/32
52.94.198.32/28
52.94.248.224/28
52.95.100.0/22
52.119.208.0/23
52.222.0.0/17
54.239.0.128/28
56.136.0.0/16
56.136.0.192/26
56.136.121.0/25
56.136.224.0/23
56.137.0.0/16
56.137.38.0/23
56.137.224.0/23
56.138.0.0/16
56.139.0.0/16
64.66.164.0/24
75.79.0.0/16
76.223.168.0/24
96.127.0.0/17
96.127.116.0/23
99.77.184.0/24
103.13.188.0/24
108.175.48.0/22
108.175.56.0/22
136.18.0.0/23
160.1.0.0/16
160.1.55.0/25
160.1.55.128/25
160.1.56.0/25
160.1.128.0/24
205.251.236.0/22
2600:1f00:2000::/40
2600:1f12::/36
2600:1f12:824:e00::/56
2600:1f12:d63:d100::/56
2600:1f12:ece:5300::/56
2600:1f12:fa9:5100::/56
2600:1f22::/36
2600:1f22:28::/48
2600:1f30:2000::/40
2600:1f32:2000::/40
2600:1f36:2000::/40
2600:1f38:2000::/40
2600:1f60:2000::/40
2600:1f61:2000::/40
2600:1f62:2000::/40
2600:1f70:2000::/40
2600:1fa0:2000::/40
2600:1fb9:2000::/40
2600:1fba:2000::/40
2600:1fbb:2000::/40
2600:1fe7:2000::/40
2600:1fe8:2000::/40
2600:1fe9:2000::/40
2600:1fea:2000::/40
2600:1feb:2000::/40
2600:1fef:2000::/40
2600:1ff0:2000::/40
2600:1ff2:2000::/40
2600:1ff3:2000::/40
2600:1ff4:2000::/40
2600:1ff6:2000::/40
2600:1ff8:2000::/40
2600:1ff9:2000::/40
2600:1ffa:2000::/40
2600:1ffc:2000::/40
2600:1ffe:2000::/40
2600:1fff:2000::/40
2600:f0f0:70::/45
2600:f0f0:4140::/48
2600:f0f0:6123::/48
2600:f0f2:7029::/48
2600:f0f2:7140::/48
2600:f0f3:f000::/44
2600:f0f3:f010:2500::/56
2600:f0fb:f000::/44
2606:8140:100::/40
2606:8140:900::/40
2620:107:4000:5::/64
2620:107:4000:7400::/56
2620:108:d000::/44
2620:108:d00f::/64

Using these ranges

Region prefix lists are used to allowlist traffic from workloads in us-gov-west-1, to route or geofence by cloud region, and to recognise AWS 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.

AWS ranges are tagged by region and service. An address inside an EC2 range is a customer-controlled virtual machine, so the owner of the traffic is the AWS customer, not Amazon; abuse reports go to AWS, which forwards them to the customer.

Other AWS regions

af-south-1156 blocks
ap-east-1166 blocks
ap-east-287 blocks
ap-northeast-1411 blocks
ap-northeast-2269 blocks
ap-northeast-3177 blocks
ap-south-1299 blocks
ap-south-2122 blocks
ap-southeast-1428 blocks
ap-southeast-2339 blocks
ap-southeast-3137 blocks
ap-southeast-4115 blocks
ap-southeast-5108 blocks
ap-southeast-683 blocks
ap-southeast-791 blocks
ca-central-1266 blocks
ca-west-197 blocks
cn-north-1153 blocks
cn-northwest-1147 blocks
eu-central-1654 blocks
eu-central-2101 blocks
eu-north-1246 blocks
eu-south-1238 blocks
eu-south-2168 blocks
eu-west-1531 blocks
eu-west-2416 blocks
eu-west-3230 blocks
eusc-de-east-195 blocks
il-central-1112 blocks
me-central-1105 blocks
me-south-1188 blocks
me-west-169 blocks
mx-central-188 blocks
sa-east-1308 blocks
sa-west-169 blocks
us-east-11,452 blocks
us-east-2579 blocks
us-gov-east-1125 blocks
us-south-186 blocks
us-west-1586 blocks
us-west-2804 blocks

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