ISP - what's that ?

In Internet Service Provider (ISP) brings the internet content to you. This may include lines and modems as well as content.

Chebeague's ISPs are Axiom and Fairpoint.

Here's how Wikipedia describes it

An Internet service provider (ISP) is an organization that provides services accessing and using the Internet. Internet service providers may be organized in various forms, such as commercial, community-owned, non-profit, or otherwise privately owned.

Internet services typically provided by ISPs include Internet access, Internet transit, domain name registration, web hosting, Usenet service and colocation.