32 Bit Real Estate
> But if I had to place a bet, it'd be that you aren't using IPv6. And you're nerdy enough to be reading a blog post on how much IPv4 addresses cost!    $ dig fly.io AAAA
    fly.io.                 590     IN      AAAA    2a09:8280:1::a:791

And looking at the Chrome network inspector, I loaded the page over IPv6.The reality is, pretty much anyone who uses a major ISP in the US has IPv6 (Comcast, Spectrum, etc. hand them out without customers even asking), and it's even more likely in other countries.The big blocker right now is cloud providers.  I lost IPv6 on my personal website when I switched from Linode to Digital Ocean (with a load balancer instead of putting them VM directly on the network).  At this point, it sounds a lot like "we paid a lot for 3.0.0.0/9 so we're going to drag our feet on IPv6 to hurt competing cloud providers".Cloud customers are somewhat to blame as well -- enabling IPv6 doesn't get you new users today, so nobody does the work to configure things twice.  But the ISPs and the users are ready.  It's just us, the tech elite, that's slowing everyone down.  And it makes sense, because we burned a lot of money on IPv4 addresses and we don't want our imaginary money to become worthless.