Thanks to all for your comments and assistance.
I had contacted mcdhu off-forum and we have established that this is most likely an AOL problem. When he uses an anonymous proxy (Proxify) he gets to the log-in screen. When he does an NSLOOKUP on sportsclubhost.com he gets a time-out error. Now, if there was a "non-existant domain" error or something else of that sort then I would have immediately concluded some sort of active blocking from AOL, either generally or in the parental controls for mcdhu's account.
However, the timeout, and the DNS address of
www.routerlogin.com (i.e. the NetGear router) clouds the issue somewhat.
I've suggested that he use OpenDNS instead of the ISP default DNS servers to see whether that sorts out the problem, but even if it does, that will not help for any other AOL users out there!
I've known colleagues have issues with AOL before. Either to do with banned IP address ranges, reverse DNS problems, spurious caching policies, and - on the face of it - a certain amount of incompetence on AOL's behalf.
My personal opinion is that AOL has got to be the worst choice of ISP these days. I used CompuServe back when, and it was great, but that was before the world wide web. Since then, AOL is a dinosaur that refuses to die. Having said that, it is only my opinion, and I do not have any wish to refuse access to our site to AOL subscribers!
Has anyone else experienced problems? Are there any other AOL users out there who could try to access
www.sportsclubhost.com and see whether they get to the login page?