One way to possibly get the name with the cell phone numbers that you have besides what you have obtained via reverse phone look up via online services is to retain a private investigator.Private investigator's have resources that lay people simply do not have in order to get information people need. I recommend that you consult with a private investigator concerning the concerns that you have with respect to your daughter's contacting of men online.You might also consider placing certain locking mechanisms on the computer that your daughter uses to protect her as well as warn her about the dangers of meeting people online.Good luck.