Unlimited Domains for an App Managed by Cloudflare on Fly.io

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Hi Fly.io Community,

I hope you’re all doing well.

I am wondering if Fly.io supports an unlimited number of domains for a single app. My plan is to have these domains managed by Cloudflare. Essentially, I want clients to register subdomains through my app, which will then be created in Cloudflare and point back to my app on Fly.io. I have encountered limitations with similar services like Railway, where the hobby plan restricts the number of domains to two.

Can Fly.io handle this kind of setup, and are there any limitations I should be aware of?

Thank you in advance for your help!

Best regards, Eduardo

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Fly provides a single <app>.fly.dev domain per app. You can point as many DNS records to your fly app as you like - I’m not aware of any limitation on Fly’s end… but you should prototype before committing.

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