9 ms·

Also he might know the friend's ip if the friend sent him an email.

• DanBC 14y ago
  Knowing the IP is the easy bit. Taking that IP and finding a street address is the tricky bit. It can be done with court orders. (In England. I have no idea how Ireland does it.)
  • loboman 14y ago
    If he knows the friend ip, he knows that they both match (friend = troll).
    • DanBC 14y ago
      Ah yes, sorry. I missed that.