An ISP is not required to reach these services from on-campus networked locations. The easiest way to find an ISP is to search The List .
Most listings have a link to the provider's home page.
You can also look through your local phone book, newspaper, and magazines to locate an provider. If so, perhaps this is a new company. If the site doesn't list access numbers, request them by e-mail or telephone. If the access numbers aren't a local call for you, move on. It makes no sense to get a flat-rate ISP, only to pay a huge phone bill every month.