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Why is CloudFlare blocking my website IP on App Platform?

Posted on November 10, 2025

I am using App Platform to host a static site and CloudFlare to manage domains, DNS, CDN, etc. I updated the A record from old IP to new IP listed for my site in App Platform, but when accessing it I get an Error 1000 from CloudFlare saying that IP is prohibited. Any idea what’s going on here?



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Heya, @1e6b823ea20d4cb189a34a922f5588

You need to point your domain name using a CNAME rather than an A or an AAAA record.

https://www.digitalocean.com/community/tutorials/how-to-configure-custom-domains-ssl-cdn

Check step 2:

  1. In your App Platform Dashboard, go to Settings → Domains → Edit, and click Add Domain.

  2. Enter your domain (e.g., www.myapp.com) and then select You manage your domain.

  3. DigitalOcean will provide a CNAME record target (e.g., your-app.ondigitalocean.app).

  4. Log in to your DNS provider’s dashboard.

  5. Add a CNAME record:

    • Host: www (or your subdomain)
    • Value: your-app.ondigitalocean.app
  6. Save the DNS record.

  7. Return to DigitalOcean and confirm domain addition.

  8. DigitalOcean will verify the DNS record.

https://www.digitalocean.com/community/tutorials/deploy-apps-with-custom-domain

Hope that this helps!

Hi there,

Can you clarify which IP address you are referring to?

Usually, instead of using an A record, you should use a CNAME record pointing your domain to your app’s .ondigitalocean.app address (for example, yourapp.ondigitalocean.app). That’s the supported setup for App Platform and will work fine behind Cloudflare:

Docs: Connect Domains to App Platform.

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