Oracle Cloud Infrastructure

Oracle publishes public IP address ranges for Oracle Cloud Infrastructure as JSON (by region) and in documentation - for firewall and routing planning.

Autonomous systems

AS31898 AS6142 AS35269

OCI public IP ranges Official feed

Official sources

https://docs.oracle.com/en-us/iaas/tools/public_ip_ranges.json

Documentation

Oracle - public IP address ranges for OCI (documentation)