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by konklone 3436 days ago
I think that's an open question. Right now, it's not the millions, that'd be too much to bundle with browsers. But browsers may well change their delivery mechanism for preload information to allow this to scale higher.

In any case, .gov won't add much to the load -- right now there are all of 5,500 .gov domains, and the rate of adding/removal is on the order of dozens every month at most.
1 comments
dragonwriter 3436 days ago
> right now there are all of 5,500 .gov domains

Is that just domains from which web content is hosted, or just second level domains regardless of whether web content is hosted? Because I can't imagine that there are only 5,500 total .gov domains.

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konklone 3436 days ago
Second level domains. There are waayyyyy more subdomains, as you note. You can see some information and estimates on this here:

https://18f.gsa.gov/2017/01/04/tracking-the-us-governments-p...

We (18F, me) personally measured at least 26,000 (though some of these are used as redirects or are just error pages, etc.).

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