Is there an alternative?

Seems to be up for me. I had to re-add it to a friend of mine's device manually (sources -> add -> manually enter it) then let it update, then it worked. Still shows both in the sources list but only one of them seems to work. As the initial repo shows that it was installed by package, but the package for it isn't in the list, it's not possible to do a 're-install' through Cydia to fix it, so this was the workaround I found.

That said, on my phone, it's working just fine with the main repo now -- so it could have just been a sporadic issue. Are you still having trouble?

Donot put www. before repo.......

if you didn't put www then it should work

However, try repo666.ultrasnow.org
it may work for u

Let us know whether it works
Cheers