Oracle Cloud Infrastructure uses 13 prefixes for sa-valparaiso-1.
Short answer
Oracle Cloud Infrastructure lists these prefixes under “sa-valparaiso-1”. Oracle Cloud Infrastructure publishes its public ranges per region in public_ip_ranges.json, with tags such as OCI and OSN (Oracle Services Network).
Prefixes
What changed
No prefixes added or removed since we started tracking this list. Changes appear here the day after the provider publishes them.
Allowlist formats
nginx (first 5 prefixes)
allow 147.224.224.0/20; allow 148.116.104.0/21; allow 149.130.224.0/19; allow 155.181.32.0/20; allow 155.181.4.0/22; deny all;
iptables (first 5 prefixes)
iptables -A INPUT -s 147.224.224.0/20 -j ACCEPT iptables -A INPUT -s 148.116.104.0/21 -j ACCEPT iptables -A INPUT -s 149.130.224.0/19 -j ACCEPT iptables -A INPUT -s 155.181.32.0/20 -j ACCEPT iptables -A INPUT -s 155.181.4.0/22 -j ACCEPT
Generate the full list from the CSV, and refresh it on a schedule: providers add and retire prefixes often.