I already cleared my cache.
There's no filter on my connection, so I don't think it's got anything to do with my provider.
The domain name is
www.teensmodel.com and the nameservers are NS1.WEB229.NET and NS2.WEB229.NET.
It's probably not the nameservers either, because they are the same as before the change where it worked fine. I think the only change they made was in my ip-address, can that be the problem?