Good old @#$%^ Comcast has a surprisingly fast, accurate, and nice online TV listing page. A popup on the page requires one to enter his or her postal code to display accurate programming and channel numbers. Great idea.

I entered 05990, the zip code for North Puffin.

That’s the zip on my installation address, my service address, and my billing address. Good old Comcast displayed this second popup:

We could not find any service providers for that ZIP Code.
Please try a different 5-digit U.S.Postal Code.