When you contact us wanting to talk about your account, we need to ascertain who you are. One of the ways we do that is by associating a number with your account. If you only have Internet service with us, we still refer to that number as a "telephone number," even though it's not a phone number in the typical sense.
We use your "billing telephone number" (BTN) to:
- Look up your account information
- Troubleshoot your DSL line
- Do pretty much anything with your service
Also, if you're filling out a CenturyLink form or using our automated phone system, have your BTN handy because you'll probably need it.