I run my own DNS, and EVTP was down for about a day, but the IP always resolved. One of either server issue, scheduled maintenance, or network issue is what I think happened. Once a site has been down for a few hours, DNS resolution depends on how long the cache is kept in the DNS server you talk to and how long the refresh interval is for that particular domain.It was fine yesterday afternoon for Verizon, also. I wonder if some DNS's have a bad result cached? I'd recommend OpenDNS to those using their carrier's DNS, it's much better: 208.67.222.222 and 208.67.220.220. The business side is now owned by Cisco, but the free consumer version is still OpenDNS, and I've used it for years and never had issues.