DNS setup: can I add A record for IPv4 if it is public (shared)?

[greg]

@seb97 Correct, that’s not currently supported.

There are several threads about that e.g

Set/get outgoing IP address for whitelisting on external APIs/Hosts

Hi there, I don’t think this is something that Fly currently does, but is there any way to set an IP address (or a list/range) that a fly app will use to make requests to external hosts? I’d really like to be able to reliably whitelist Fly apps by IP/list/range/whatever. I run reverse proxies, and occasionally one or more Fly IPs will get blacklisted by an external host. Since some requests go out through different Fly IP addresses to the external host, we get an intermittent “sometimes it mak…

This thread has some suggested ways to get an IP (if you scroll down). I haven’t tried any of them so I don’t know if they actually work:

Outbound IP Address

We still don’t have the plumbing to give people stable outbound IPs. For now, the simplest thing is either quotaguard.com or VMs from someone like DigitalOcean running a proxy (Smokescreen would be pretty easy: GitHub - fly-apps/smokescreen: An example of deploying Smokescreen on Fly.io)