Problem with ISP accessing some sites? WTF?

[Phil]

This is weird, I have comcast at home and att in my office. One server can't be accessed thru comcast network at least once every week. It just hands there. If I use ATT connection all works fine. Have you ever had problems like that and whats causing it??? cache or some sort of firewall? wtf?

[Supz]

routing issue with the way comcast gets there, when it times out do a tracert, see where the connection stops.

[papill0n]

I had a similar problem and after tearing my hair out i discover my wireless router had blocked a few sites without me doing anything so check your router settings is my two cents

[Barefootsies]

Yep, same here.

I have had that same issue a number of times with Charter. Luckily, I have a back up T1 in my office for just such an occasion.