Google Cloud us-west1 IP ranges

Google Cloud region

The Google Cloud region us-west1 uses 68 IPv4 and 2 IPv6 blocks, covering about 1.6 million unique IPv4 addresses. It is one of 47 Google Cloud regions with published address ranges.

IPv4 blocks: 68
IPv6 blocks: 2
Unique IPv4 addresses: 1,630,720

Range data updated 2026-11-07

us-west1 address prefixes

8.228.248.0/21
8.229.0.0/16
8.231.48.0/20
8.231.128.0/17
8.235.0.0/17
34.3.96.0/20
34.4.104.0/21
34.4.208.0/20
34.11.128.0/17
34.19.0.0/17
34.53.0.0/17
34.82.0.0/15
34.105.0.0/17
34.118.192.0/21
34.127.0.0/17
34.143.64.0/21
34.145.0.0/17
34.157.112.0/21
34.157.240.0/21
34.158.8.0/21
34.158.240.0/21
34.168.0.0/15
34.177.112.0/21
34.182.0.0/17
34.183.24.0/22
34.183.58.0/24
34.183.113.0/24
34.183.124.0/24
34.183.160.0/23
34.184.24.0/22
34.184.55.0/24
34.184.112.0/24
34.184.123.0/24
34.184.160.0/23
34.187.128.0/17
35.185.192.0/18
35.197.0.0/17
35.199.144.0/20
35.199.160.0/19
35.203.128.0/18
35.212.128.0/17
35.220.48.0/21
35.227.128.0/18
35.230.0.0/17
35.233.128.0/17
35.242.48.0/21
35.243.32.0/21
35.247.0.0/17
35.252.64.0/18
35.252.128.0/17
104.196.224.0/19
104.198.0.0/20
104.198.96.0/20
104.199.112.0/20
136.66.0.0/15
136.69.128.0/17
136.70.0.0/18
136.74.0.0/16
136.86.128.0/17
136.87.0.0/16
136.109.0.0/16
136.117.0.0/16
136.118.0.0/16
179.67.64.0/18
179.69.128.0/18
179.193.192.0/18
179.199.0.0/17
186.242.0.0/18
2600:1900:4040::/44
2600:1902:290::/44

Using these ranges

Region prefix lists are used to allowlist traffic from workloads in us-west1, to route or geofence by cloud region, and to recognise Google Cloud 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.

A Google Cloud address belongs to a Google Cloud customer, not to Google itself. Google's own crawlers use separate ranges and reverse DNS names, so a request claiming to be Googlebot from a Google Cloud customer range is not genuine.

Other Google Cloud regions

africa-south18 blocks
asia-east132 blocks
asia-east213 blocks
asia-northeast128 blocks
asia-northeast213 blocks
asia-northeast330 blocks
asia-south136 blocks
asia-south219 blocks
asia-southeast152 blocks
asia-southeast219 blocks
asia-southeast36 blocks
australia-southeast127 blocks
australia-southeast212 blocks
europe-central211 blocks
europe-north111 blocks
europe-north26 blocks
europe-southwest111 blocks
europe-west157 blocks
europe-west106 blocks
europe-west1213 blocks
europe-west155 blocks
europe-west240 blocks
europe-west335 blocks
europe-west441 blocks
europe-west613 blocks
europe-west819 blocks
europe-west99 blocks
me-central18 blocks
me-central217 blocks
me-west114 blocks
northamerica-northeast126 blocks
northamerica-northeast215 blocks
northamerica-south18 blocks
southamerica-east116 blocks
southamerica-west116 blocks
us-central1111 blocks
us-central214 blocks
us-east150 blocks
us-east455 blocks
us-east520 blocks
us-east711 blocks
us-south122 blocks
us-west225 blocks
us-west316 blocks
us-west415 blocks
us-west86 blocks

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