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gcp · us-central1

Google Cloud uses 111 prefixes for us-central1.

Last updated 4 Nov 2026 from Google Cloud’s own list (file dated 2026-11-03T18:03:05.86262)

Short answer

Google Cloud lists these prefixes under “us-central1”. Google Cloud publishes cloud.json: the external address ranges available to Google Cloud customers, with the region (scope) each one is used in.

IPv4 prefixes109
IPv6 prefixes2
Regions in the first 100us-central1
Fetched by peekip4 Nov 2026

Prefixes

PrefixRegion / locationService
104.154.113.0/24us-central1us-central1
104.154.114.0/23us-central1us-central1
104.154.116.0/22us-central1us-central1
104.154.120.0/23us-central1us-central1
104.154.128.0/17us-central1us-central1
104.154.16.0/20us-central1us-central1
104.154.32.0/19us-central1us-central1
104.154.64.0/19us-central1us-central1
104.154.96.0/20us-central1us-central1
104.155.128.0/18us-central1us-central1
104.197.0.0/16us-central1us-central1
104.198.128.0/17us-central1us-central1
104.198.16.0/20us-central1us-central1
104.198.32.0/19us-central1us-central1
104.198.64.0/20us-central1us-central1
107.178.208.0/20us-central1us-central1
108.59.80.0/21us-central1us-central1
130.211.112.0/20us-central1us-central1
130.211.128.0/18us-central1us-central1
130.211.192.0/19us-central1us-central1
130.211.224.0/20us-central1us-central1
136.111.0.0/16us-central1us-central1
136.112.0.0/14us-central1us-central1
136.116.0.0/16us-central1us-central1
136.119.0.0/16us-central1us-central1
136.64.0.0/15us-central1us-central1
136.71.0.0/16us-central1us-central1
136.80.0.0/16us-central1us-central1
136.88.0.0/15us-central1us-central1
136.93.0.0/16us-central1us-central1
146.148.32.0/19us-central1us-central1
146.148.64.0/19us-central1us-central1
146.148.96.0/20us-central1us-central1
162.222.176.0/21us-central1us-central1
173.255.112.0/21us-central1us-central1
199.192.115.0/24us-central1us-central1
199.223.232.0/22us-central1us-central1
199.223.236.0/24us-central1us-central1
23.236.48.0/20us-central1us-central1
23.251.144.0/20us-central1us-central1
34.0.225.0/24us-central1us-central1
34.10.0.0/16us-central1us-central1
34.118.200.0/21us-central1us-central1
34.121.0.0/16us-central1us-central1
34.122.0.0/15us-central1us-central1
34.128.32.0/22us-central1us-central1
34.13.68.0/22us-central1us-central1
34.132.0.0/14us-central1us-central1
34.136.0.0/16us-central1us-central1
34.153.240.0/21us-central1us-central1
Showing 50 of 111 prefixes All prefixes (CSV)

What changed

  • 11 Oct 2026
    + 34.183.144.0/20
+ 34.184.144.0/20
  • 9 Oct 2026
    − 34.183.144.0/20
− 34.184.144.0/20

Allowlist formats

nginx (first 5 prefixes)
allow 104.154.113.0/24;
allow 104.154.114.0/23;
allow 104.154.116.0/22;
allow 104.154.120.0/23;
allow 104.154.128.0/17;
deny all;
iptables (first 5 prefixes)
iptables -A INPUT -s 104.154.113.0/24 -j ACCEPT
iptables -A INPUT -s 104.154.114.0/23 -j ACCEPT
iptables -A INPUT -s 104.154.116.0/22 -j ACCEPT
iptables -A INPUT -s 104.154.120.0/23 -j ACCEPT
iptables -A INPUT -s 104.154.128.0/17 -j ACCEPT

Generate the full list from the CSV, and refresh it on a schedule: providers add and retire prefixes often.

Sources

  1. Google Cloud: published IP ranges · checked 4 Nov 2026
  2. Google Cloud documentation