[LINK] Google-Cloud IP addressing

David Lochrin dlochrin at aussiebb.com.au
Tue Oct 13 22:37:22 AEDT 2020


On 2020-10-13 14:27, Hamish Moffatt wrote:

> This is name-based virtual hosting, and has been part of HTTP since 1.1 and HTTPS since more recently.  It is necessary because there's nowhere near enough IPv4 address space for every web site in existence (in addition to all the client devices).  It is not a DNS hack.
[...]

Thanks for that explanation Hamish, I've never known much more than the basics of HTML.

I searched for 23.236.62.147 on https://dnslytics.com/reverse-ip as you suggested, and that site reported "Found 6,281,493 domains hosted on IP address 23.236.62.147".  Over six million IP domains hanging on one address!!

I can't imagine the designers of HTTP 1.1 had that in mind 23 years ago when the RFC was published, and there must surely be some compromises.  What on earth has happened to IP6?

David Lochrin



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