The company which provides bandwidth for these worlds hit financial difficulties, and was purchased by another company.
As a result the bandwidth for these servers is now coming from a different provider and there may be a few glitches whilst the new company takes over.
One of our bandwidth providers going bust is obviously out of our control, and we had no warning that this was coming. We have however arranged a contract with an alternative provider who is ready to step in if problems continue.
Thanks for bearing with us whilst we sort this out.