Got this from ViaBtc a few hours ago:
Dear ViaBTC users,
Recently, due to the impact of DNS pollution, some of the users in certain regions experienced abnormal resolution of the ViaBTC domain name (
www.viabtc.com) and were unable to access the website properly. After emergency maintenance, ViaBTC has activated a new domain name (
www.viabtc.net). If you have ever encountered the above situation, please use the new domain name to visit the website.
DNS pollution as in spoofing?
Poolin and F2pool were reachable at noon (GMT), viabtc.com was off, can't test .net for a while to see if it works.