The FCC has a new tool that should be helpful for anyone wanting to know what internet services are available for your address. Just go to the website and enter the address you are interested in
FCC Broadband Map Link
It the site shows a service that is not available at your address, you can “challenge” the data and the service provider has 30 days to respond. It seems that Comcast has been caught a few times declaring service available when it is not (they get federal subsidies based upon their coverage).