The only thing I can think of is either NoScript extension or the fact that I don't allow firefox trusted status, just browser status and when it tries a TCP connect to URL, port 4445 (a UDP port) my firewall asks permission (4 times), now when I used Maxthon (same browser status) the firewall asked permission 12 times or more, I lost count.
Tested with firefox at trusted status and still only the cropped list I showed above, weird.
Also since no-ip.org uses url masking to deliver an add at the bottom of the page, my AdBlock extension may also be getting into the act. Perhaps it is just a combination of all these and my security that screws it with firefox and this url. I can't remember it being like this the last time I visited the site, so perhaps no-ip.org have also done some reconfiguration.
