Looking for any info on this number as it was the last one used by a family member that has been missing...any info would be so greatly appreciated. -bless

Try our sister site: www.whocallsme.com
If there is an open investigation on the person who is out of contact, I assume you gave this number to the police?  They usually have ways to get more info on a number than you might get in a pubic forum like 800notes or by paying for info to services such as intelius and the like.  Those services generally do not have useful data in my experience, and the costs are insulting.

If you have a friendly lawyer, you many law offices subscribe to Lexus/Nexus and that might be worth a try.