Google Cloud uses 41 prefixes for europe-west4.
Short answer
Google Cloud lists these prefixes under “europe-west4”. Google Cloud publishes cloud.json: the external address ranges available to Google Cloud customers, with the region (scope) each one is used in.
Prefixes
What changed
- 1 Nov 2026
+ 34.183.162.0/23 + 34.184.162.0/23
Allowlist formats
nginx (first 5 prefixes)
allow 34.1.224.0/19; allow 34.104.126.0/23; allow 34.12.0.0/16; allow 34.124.62.0/23; allow 34.13.128.0/17; deny all;
iptables (first 5 prefixes)
iptables -A INPUT -s 34.1.224.0/19 -j ACCEPT iptables -A INPUT -s 34.104.126.0/23 -j ACCEPT iptables -A INPUT -s 34.12.0.0/16 -j ACCEPT iptables -A INPUT -s 34.124.62.0/23 -j ACCEPT iptables -A INPUT -s 34.13.128.0/17 -j ACCEPT
Generate the full list from the CSV, and refresh it on a schedule: providers add and retire prefixes often.
Sources
- Google Cloud: published IP ranges · checked 3 Nov 2026
- Google Cloud documentation