Oh, you might be into something here.
My ISP is http://www.isrcomunicaciones.es/
But he is a guy in a flat with 18 cats and a fibre link. He has rigged up links to a small housing estate that was missed out by the big players. He might well be buying a high speed line from a real ISP and dividing it amongst his customers. There might well be a router between the other end of the microwave link and the fibre. I will ask him.