Does PingPing Work with Cloudflare, AWS, or Other CDNs?
Yes. PingPing works with websites behind Cloudflare, AWS CloudFront, Fastly, Vercel, Netlify, and any other CDN or reverse proxy. However, you may need to whitelist PingPing's monitoring IP addresses in your CDN or firewall settings to prevent false downtime alerts.
Why CDNs Can Interfere with Monitoring
CDNs and Web Application Firewalls (WAFs) are designed to protect your site from suspicious traffic. A monitoring service that sends automated HTTP requests as often as every 30 seconds can resemble bot traffic, and aggressive rate-limiting or bot-protection rules may block those requests.
When PingPing's checks are blocked, it looks like your site is down even though it is perfectly healthy for real visitors. This creates false alerts that erode trust in your monitoring setup.
How to Configure Cloudflare for PingPing
In Cloudflare's dashboard, navigate to Security → WAF → Tools → IP Access Rules. Add each of PingPing's monitoring IPs (see the full list) with the action set to "Allow." This ensures Cloudflare never challenges or blocks PingPing's requests.
If you use Cloudflare's Rate Limiting rules, create an exception for PingPing's IPs to avoid rate-limit blocks.
AWS WAF and Security Groups
For sites hosted on AWS behind an Application Load Balancer, add PingPing's IPs to the relevant Security Group's inbound rules. If you use AWS WAF, create a rule to allow traffic from PingPing's IP set before your rate-limiting or bot-detection rules evaluate the request.
General CDN Guidance
The principle is the same for any CDN or WAF: identify PingPing's monitoring IPs and add them to your allowlist. PingPing publishes a machine-readable IP list at https://pingping.io/ips that you can use in automated firewall scripts.
Multi-Location Monitoring and CDNs
PingPing's two-location verification is particularly valuable when your site uses a CDN. A CDN can have edge nodes fail in specific regions while others remain healthy. Because PingPing verifies from a second location on the other side of the world, it can confirm whether a failure is regional or global before alerting you.