Craigslist and Time Warner

I personally think it is a TW problem but as usual they blame the other end of the connection. I guarantee it will work tomorrow morning and work all week. This is the only site I have problems with on the weekends. And it's not a matter of Craigslist server being slow, I can't even ping the site to get a response. That tells me I'm not even getting out of roadrunner to reach Craigslist in the first place. I can have a friend ping at the same time and they reach it as they should but they do not have roadrunner.