I cant access .edu and .org sites?

Sometime randomly today, I can no longer connect to my college's sire not the collegeboard.org side or any other edu site. Everything was fine earlier today and in attempts to resolve the issue i disabled all of my firefox extensions and addons to no avail. Like i said, everything was fine earlier today. I can access the sites fine on other PC's on the same wired network. I have no clue what to do.

Any help is appreciated,



so after a shutdown, modem and router reset it works again but i still have no clue as to why it happened, any ideas? I just dont want it happening again if for some reason a reset cant fix it at that point..