Spectrum’s network is built on fiber, which carries traffic between regions and out to neighborhoods. The final stretch to your home runs over a coaxial line, often the same one already wired into the walls. Because that line is usually there already, a network built this way tends to reach most of a street, not just a few new blocks. Coverage still changes from one address to the next, so the address check comes first.
Inside the house, the plan’s speed is shared by every device that is online, so choose a plan for the number of people using it at the same time. Data is not capped and there is no throttling, so a heavy month is not slowed down or billed extra.