If it's still on and ringing your network provider might be able to help you with a rough location. Im not sure if they honor such requests but you can try.
Discussion
thanks. I called Tmobile, but they say they cannot do this. They keep transferring me and asking me to sign into my Google account (the phone is not associated with any Google account).
right now, I'm remotely logging out of any sessions that I can remember that are still active.