I came across a site that doesn't work when I type in the address with the "www." prefix. The following is an example: if you click on this link, it won't take you to any site, but rather display an error message. By simply doing away with the "www." prefix, as in here, the site loads up just fine. I can see why a site wouldn't load when the prefix is missing, but I can't think of any reason for a site not to work with it, rather than without it.
I found the problem. The administrator of that domain name hasn't set up an address (A or AAAA) record for
Compare this to what nearly every other site does:
Unless this is your domain, there's very little you can do to fix it, except perhaps contact the site and advise them of their problem and hope someone there has enough clue to fix it.
Your question is based on a somewhat false premise. There is no special reason
There is simply a general agreement that the host name
You question is based on the false premise that