Did you try the usual Google DNS instead of what the router gets from the ISP?
I've been unable to access Facebook through my wireless for the past few days. I've tried different laptops and several browsers to no avail.
On Internet Explorer the message says, "Internet Explorer cannot display the website." No problems have been diagnosed.
I think the problem is my connection because I have no problem logging on at the library, so I know it isn't the website.
Facebook is the only site that won't load.
Is it possible that my router has blocked it? If so, what can I do? Turning it off and on hasn't helped.