REMINDER: Cell Phone Numbers Go Public this month. That means that all cell phone numbers are being released to telemarketing companies and you will start to receive sales calls. To prevent this, call the following number from your cell phone: 888-382-1222. It is the National DO NOT CALL list It will only take a minute of your time... It blocks your number for five (5) years. You must call from the cell phone number you want to have blocked. You cannot call from a different phone number.