Google Cloud uses 30 prefixes for asia-northeast3.
Short answer
Google Cloud lists these prefixes under “asia-northeast3”. 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
+ 34.183.172.0/23 + 34.184.172.0/23
Allowlist formats
nginx (first 5 prefixes)
allow 34.0.96.0/19; allow 34.152.96.0/24; allow 34.158.192.0/19; allow 34.177.64.0/24; allow 34.183.172.0/23; deny all;
iptables (first 5 prefixes)
iptables -A INPUT -s 34.0.96.0/19 -j ACCEPT iptables -A INPUT -s 34.152.96.0/24 -j ACCEPT iptables -A INPUT -s 34.158.192.0/19 -j ACCEPT iptables -A INPUT -s 34.177.64.0/24 -j ACCEPT iptables -A INPUT -s 34.183.172.0/23 -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