AWS ca-west-1 IP ranges

Amazon Web Services (AWS) region

The Amazon Web Services (AWS) region ca-west-1 uses 50 IPv4 and 47 IPv6 blocks, covering about 803,712 unique IPv4 addresses. It is one of 42 AWS regions with published address ranges.

IPv4 blocks: 50
IPv6 blocks: 47
Unique IPv4 addresses: 803,712

Range data updated 2026-11-07

ca-west-1 address prefixes

1.178.26.0/24
3.2.96.0/24
3.5.172.0/22
13.248.73.0/24
15.177.100.0/24
15.190.8.0/22
15.190.48.0/20
15.248.64.0/21
16.12.56.0/23
16.12.58.0/24
16.174.0.0/16
16.174.54.0/23
16.174.56.0/22
16.174.90.128/25
16.174.136.0/22
16.175.0.0/16
18.99.128.0/20
18.99.129.0/25
35.54.57.0/24
35.71.123.0/24
40.176.0.0/15
40.176.65.0/24
40.176.82.0/24
40.176.83.0/24
40.176.85.0/26
40.176.85.128/26
40.176.85.192/26
40.176.86.0/26
40.176.86.64/26
40.176.98.240/28
40.176.101.0/26
40.176.101.64/28
40.176.213.168/29
40.177.52.0/23
40.178.0.0/15
40.188.0.0/16
40.201.0.0/16
52.94.250.48/28
56.112.0.0/16
56.112.70.0/23
56.113.0.0/16
56.114.0.0/16
56.115.0.0/16
64.66.145.0/24
76.223.170.0/28
99.151.168.0/21
150.222.52.96/27
150.222.52.128/27
150.222.52.160/27
173.83.232.0/24
2600:1f00:a400::/40
2600:1f1a:4000::/36
2600:1f1a:4040:b100::/56
2600:1f1a:41c6:700::/56
2600:1f1a:4568:b500::/56
2600:1f1a:4bd9:d100::/56
2600:1f1a:4ff6:d500::/56
2600:1f2a:4000::/36
2600:1f2a:401c::/48
2600:1f30:a400::/40
2600:1f32:a400::/40
2600:1f36:a400::/40
2600:1f38:a400::/40
2600:1f60:a400::/40
2600:1f61:a400::/40
2600:1f62:a400::/40
2600:1f70:a400::/40
2600:1fa0:a400::/40
2600:1fb9:a400::/40
2600:1fba:a400::/40
2600:1fbb:a400::/40
2600:1fe7:a400::/40
2600:1fe8:a400::/40
2600:1fe9:a400::/40
2600:1fea:a400::/40
2600:1feb:a400::/40
2600:1fef:a400::/40
2600:1ff0:a400::/40
2600:1ff2:a400::/40
2600:1ff3:a400::/40
2600:1ff4:a400::/40
2600:1ff6:a400::/40
2600:1ff8:a400::/40
2600:1ff9:a400::/40
2600:1ffc:a400::/40
2600:1ffe:a400::/40
2600:1fff:a400::/40
2600:f0f0:6120::/48
2600:f0f0:c127::/48
2600:f0f2:7020::/48
2600:f0f3:f010:3000::/56
2600:f0fb:f10c::/48
2605:b140:9805::/48
2606:7b40:1a4e:4000::/60
2606:7b40:1b0e:4000::/56
2620:107:4000:4c00::/56
2620:107:4000:7c00::/56

Using these ranges

Region prefix lists are used to allowlist traffic from workloads in ca-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
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-gov-west-1156 blocks
us-south-186 blocks
us-west-1586 blocks
us-west-2804 blocks

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