·Time Warner Cable
·Verizon Online DSL
Clearwire has massively varying amounts of spectrum, depending on the city. Some places their (+ Sprint's) BRS plus leased EBS is 100MHz. Other places, not so much.
Also, in some areas their WiMAX network is using a significant chunk of spectrum, due to poor spectrum reuse capabilities of 802.16e (you can't use the same channel on all sector on the same site).