Finding Phone Numbers

[Account Closed]

I was trying to find a reliable source/directory for cell phone numbers given a name and/or billing address.  Doing so I learned the following:

* There is no quick/easy source.

* Free options have pretty stale data and rarely cell phone contact information.

* Paid options cost vary widely and I assume correlates to accuracy.

I can't be the only one trying to get cell phone numbers for my mailing list.  Any suggestions?

I reviewed numerous BiggerPockets forum posts and compiled all the recommended options for looking up potential sellers information.  

http://accurint.com/

https://intelius.com/

https://tlo.com/

https://spokeo.com/

http://microbilt.com/

https://beenverified.com/

https://americantracers.com/

https://ppointpi.com/

https://colerealtyresource.com/

https://listshack.com/

http://melissadata.com/lookups/

https://prospectnow.com/

https://pipl.com/

https://radaris.com/

https://thatsthem.com/

https://411.com/

https://whitepages.com/

https://anywho.com/whitepages

https://searchbug.com/

http://execudeskva.com/

http://blipleads.com/

http://axcyss.com/

https://nuwber.com/