Avoid Broken Allowlists as Render Updates Outbound IPs
Approximate time to read: 2 min
Render is growing, and that’s great news! 🎉
As part of that growth, Renders infrastructure also has to grow and expand.
If you run services on Render and have external systems that rely on IP whitelisting, you might be running into a growing pain point: as Render grows and scales its infrastructure, outbound IP ranges expand and change.
For example, Render has published upcoming changes to outbound IP addresses, rolling out new ranges starting October 27, 2025 and retiring old ones no later than December 1, 2025.
Typical use-case to use QuotaGuard static IPs
Your app on Render needs to communicate with a third-party service (API, database, SaaS) that enforces static IP allow-lists. That third-party might:
- Reject CIDR notation (e.g., can’t accept “/24” ranges)
- Limit the number of individual IPs you can whitelist
If Render adds, removes or changes outbound IP blocks, your traffic starts failing unless you constantly update the allow-list.
One solution
Instead of exposing many changing IPs, route your outbound traffic through a fixed proxy service that delivers two static IPs. One concrete implementation: QuotaGuard Static IP.
Render’s docs already support this integration and are available here for QuotaGuard with Render.
Those two static IPs become your only external addresses: you whitelist them once and forget the rest.
You still run on Render, but downstream systems see only a stable egress point.
Why this makes sense now
- Render’s outbound IP ranges are changing (see Renders changelog notice).
- Downstream partners frequently won’t accept broad or CIDR-notation ranges.
- The static proxy approach decouples your service growth from allow-list maintenance.
- You reduce operational risk and simplify onboarding for new allow-list-restricted integrations.
What to check
- Confirm your third-party can update for one or two fixed IPs.
- Review QuotaGuard and Render’s documentation for the proxy setup (environment variable, library integration) and test your routed IP via something like curl to an IP-echo service.
- Consider latency/throughput impact when adding a proxy hop–test accordingly. QuotaGuard support can assist with best practices, or set up dedicated services to lower latency.
More Questions?
We are always happy to help at QuotaGuard Support.