Take a look at the difference between how a page (msnbc.com) loads from an IPv6-Only monitoring location and a monitoring location with native IPv6 or 6to4 translation. You may want to think about running an IPv6 test on your own websites after seeing these results.
The Dotcom-Monitor server at the Texas (TX) monitoring location is back online as of 11/24/2014 05:00 PM CST. We apologize for any inconvenience. Any questions regarding your report history may be directed to our support staff. Thank you.