2009/5/30 Res <r...@ausics.net>: >> If example.com has A records, and www.example.com has A records, >> they often, but not always, have the same A records. > > In the hosting world this is very common, how many of those plesk boxes out > there with A,www-A and mail-A/MX point to same IP, tens of thousands > yielding hundreds upon hundreds of thousands of domains I'd say :) > Of course ISP's and large ASP/OSP's using internal prorietory setups with > separate servers for WWW/MX, and most businesses above SOHO, > would of course use separate servers and IP's.
I can only speak for my own employer (hosting provider in Australia), but my anecdotal findings have to agree with Wietse's (but the scope may not match that of the original assertions). The only cpanel/plesk/$controlpanel boxes in the shop are those owned by customers, which we don't support (we have no love whatsoever for these control panels). We have, at a guess, an order of magnitude more customers on shared hosting compared to dedicated servers. DNS, www and mail are separate servers, so if you assume roughly one domain for each customer, this skews things quite strongly towards domain-not-in-a-box. Of course as I mentioned, the original assertion may have been about people who manage their own services, which is very different to this.
