Channel numbers vary depending on the cable company. For example, Comcast's Xfinity cable service may have CBS as channel 3, whereas Time Warner Cable may have it as channel 5. To find a channel's number, customers may try searching online for their provider's line up.
The channel numbers also vary depending on where someone is located. For example, in Austin, Texas, Time Warner Cable has Fox as channel 2, whereas in Dallas, the company has it as channel 4. When looking at a provider's channel line up, it is important that a user is looking at the listings by ZIP code.