Spectrum describes its network as Fiber-Powered: fiber optic lines carry traffic over the long distances between regions and into neighborhoods, and a coaxial line connects the premises, often one already in the walls. Our ZIP search shows Spectrum’s FCC filing for your ZIP as the share of the ZIP it reports reaching, next to the top speed it filed.
Inside the house, every device shares the plan’s speed, so the number to plan around is how many people are online at the same time. Spectrum sets no data cap on these plans, so a heavy month brings no overage charge.