Who called from 4168486935

Had this number call416-848-6935, no one on the other end, called the number and upon pick up it dialed another number to seemingly nowhere.

Should i be concerned?

I had the same number call me,, i picked up the phone no one answered.

HAD THE NUMBER CALL ME TOO. HE JUST SAID MY SON'S NAME AND HUNG UP. WHEN WE SEARCHED THE NUMBER ON CANADA411 IT TURNS OUT ITS NOT LISTED. SPOOKY. I CALLED BACK AND NO ONE ANSWERED.