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gcp · northamerica-south1

Google Cloud uses 8 prefixes for northamerica-south1.

Last updated 5 Nov 2026 from Google Cloud’s own list (file dated 2026-11-04T18:04:11.909689)

Short answer

Google Cloud lists these prefixes under “northamerica-south1”. Google Cloud publishes cloud.json: the external address ranges available to Google Cloud customers, with the region (scope) each one is used in.

IPv4 prefixes6
IPv6 prefixes2
Regions in the first 100northamerica-south1
Fetched by peekip5 Nov 2026

Prefixes

PrefixRegion / locationService
34.153.234.0/23northamerica-south1northamerica-south1
34.153.42.0/23northamerica-south1northamerica-south1
34.183.171.0/24northamerica-south1northamerica-south1
34.184.170.0/24northamerica-south1northamerica-south1
34.2.0.0/20northamerica-south1northamerica-south1
34.51.0.0/17northamerica-south1northamerica-south1
2600:1900:4290::/44northamerica-south1northamerica-south1
2600:1902:1f0::/44northamerica-south1northamerica-south1
Showing 8 of 8 prefixes All prefixes (CSV)

What changed

  • 1 Nov 2026
    + 34.183.171.0/24
+ 34.184.170.0/24

Allowlist formats

nginx (first 5 prefixes)
allow 34.153.234.0/23;
allow 34.153.42.0/23;
allow 34.183.171.0/24;
allow 34.184.170.0/24;
allow 34.2.0.0/20;
deny all;
iptables (first 5 prefixes)
iptables -A INPUT -s 34.153.234.0/23 -j ACCEPT
iptables -A INPUT -s 34.153.42.0/23 -j ACCEPT
iptables -A INPUT -s 34.183.171.0/24 -j ACCEPT
iptables -A INPUT -s 34.184.170.0/24 -j ACCEPT
iptables -A INPUT -s 34.2.0.0/20 -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 5 Nov 2026
  2. Google Cloud documentation