Register your telephone with the National US Do Not Call Registry to avoid receiving unwanted marketing calls.

Have you ever been disrupted by a call from a telemarketer when you are reading a book, watching TV or late in the night when you are sleeping?

When yes, you’re not alone.

Your first step to stop this annoyance is to register your number with the FCC's Do-Not-Call Registry.

When you've registered callers may only call you when they
- have established a business relationship with you,
- have you prior written permission,
- do not call commercially or do not include unsolicited advertisements.

You have a cell phone number and look for the name and address. A cell phone reverse reverse look-up directory will give you access to these data and much more.
If you have a phone number but don't know to whom this number belongs to or what address is related to you will need a Reverse Phone Lookup to find the required details.

You'll find many places on the Internet where you will find residential, business phone and toll-free numbers lookups for free.

But is a reverse cell phone lookup on the Internet also free?

Cell phone numbers are only held by telecommunications companies and carriers and they don't give them away for free. It's similar with unlisted numbers and fax numbers.