Google Cloud uses 40 prefixes for europe-west2.
Short answer
Google Cloud lists these prefixes under “europe-west2”. 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
+ 34.183.142.0/23 + 34.184.142.0/23
Allowlist formats
nginx (first 5 prefixes)
allow 34.105.128.0/17; allow 34.127.186.0/23; allow 34.128.224.0/20; allow 34.128.52.0/22; allow 34.13.0.0/18; deny all;
iptables (first 5 prefixes)
iptables -A INPUT -s 34.105.128.0/17 -j ACCEPT iptables -A INPUT -s 34.127.186.0/23 -j ACCEPT iptables -A INPUT -s 34.128.224.0/20 -j ACCEPT iptables -A INPUT -s 34.128.52.0/22 -j ACCEPT iptables -A INPUT -s 34.13.0.0/18 -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 5 Nov 2026
- Google Cloud documentation