> On Mar 31, 2022, at 16:47 , Bill Woodcock <wo...@pch.net> wrote: > > > >> On Apr 1, 2022, at 12:15 AM, Bill Woodcock <wo...@pch.net> wrote: >> …in a run-of-the-mill web hoster? >> I’m happy to take private replies and summarize/anonymize back to the list, >> if people prefer. > > I asked the same question on Twitter, and got quite a lot of answers in both > places pretty quickly. Thus far, 23 answers, with an average of about > 490,000 and a median of 1,500. > > Obviously there are a lot of different factors that go into this, but the two > that were cited most frequently were that user who want their own individual > IP drive the number down, while large load-balancing/caching infrastructures > drive the number up. > > Thank you all very much. I appreciate the education, and I hope it’s useful > to others as well! > > -Bill >
I would think that the 490,000 is more likely to reflect “web servers” per address vs. “web sites” per address. I think that your mention of load-balancing and caching somewhat prove (or at least support) my speculation here. I suspect that when you talk about “web sites” instead of “web servers”, the number probably falls somewhere in the sub-1k range. For clarity, “https://www.amazon.com/[ <http://www.amazon.com/%5B>…]” is a web site. It is almost certainly served by many many servers. Prior to SNI, it was mostly 1 web server per address. In 2018, major CDNs were just starting to consider ending support for non-SNI clients. Owen
