Website Visibility Tool
Thanks to GoDaddy phone support, I discovered this very useful site: megaproxy. One of my domain names was not resolving correctly from home. I went to the website above and checked it, and everything was resolving correctly from there. I had tested it from home with four different browsers, so cookies and cache were not the problem. This told me that the problem was with my service provider (ISP) not updating THEIR cache recently enough.
blog version similar posts here ... and elsewhere
Leave a new comment regarding "website-visibility-tool":